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a. A solid piece of a hard substance, such as wood, having one or more flat sides.
b. Such a piece used as a construction member or as a support.
c. Such a piece upon which chopping or cutting is done: a butcher's block.
d. Such a piece upon which persons are beheaded.
e. One of a set of small wooden or plastic pieces, such as a cube, bar, or cylinder, used as a building toy.
f. Printing A large amount of text.
g. Sports A starting block.
2. A stand from which articles are displayed and sold at an auction: Many priceless antiques went on the block.
3. A mold or form on which an item is shaped or displayed: a hat block.
4. A substance, such as wood or stone, that has been prepared for engraving.
a. A pulley or a system of pulleys set in a casing.
b. An engine block.
6. A bloc.
7. A set of like items, such as shares of stock, sold or handled as a unit.
8. A group of four or more unseparated postage stamps forming a rectangle.
9. Canadian A group of townships in an unsurveyed area.
a. A usually rectangular section of a city or town bounded on each side by consecutive streets.
b. A segment of a street bounded by consecutive cross streets and including its buildings and inhabitants.
11. A large building divided into separate units, such as apartments.
12. A length of railroad track controlled by signals.
13. Something that obstructs; an obstacle: The disabled car formed a block in traffic.
14. The act of preventing someone or something from advancing, passing, or progressing, as:
a. Sports An act of bodily obstruction, as of a player or the ball.
b. Football An act of legally using one's body to obstruct or move a defensive player so that a player in possession of the ball may advance downfield, pass, or otherwise execute an offensive play.
15. Medicine Interruption or obstruction of a physiological function: nerve block.
16. Psychology A sudden cessation of speech or a thought process without an immediate observable cause, sometimes considered a consequence of repression. Also called mental block.
17. Slang The human head: threatened to knock my block off.
v. blocked, block·ing, blocks
a. To stop or impede the passage of or movement through; obstruct: block traffic; mud that blocked the pipe.
b. To prevent from happening, succeeding, or progressing: blocked every attempt to reform the rules.
c. To shut out from view: a curtain blocking the stage.
d. To stop the passage of (a motion or bill) in a legislative assembly.
e. Sports To prevent or slow the movement of (an opponent) by using one's body, as by making a block in football.
f. Sports To stop or deflect (a ball or puck) by using one's body.
g. Medicine To interrupt or obstruct the functioning of (a physiological process), especially by the use of drugs.
h. Psychology To fail to remember.
2. To support, strengthen, or retain in place by means of a block.
3. To shape, mold, or form with or on a block: block a hat.
4. To indicate broadly without great detail; sketch. Often used with out: block out a plan of action; block out stage movements.
5. To run (trains) on a block system.
1. Sports
a. To obstruct the movement of an opponent by using one's body.
b. To stop or deflect a ball or puck by using one's body.
2. To suffer a mental block. Often used with on: I blocked on his name.
Phrasal Verb:
block out
1. To cover over so as to be illegible: block out sensitive information from a document before releasing it.
2. To repress (a traumatic event, for example) from conscious memory.
go on the block
To be offered for sale.
out of the blocks
From a starting position, as in a race or contest: The company has in the past been slow out of the blocks to adapt to consumer tastes.
put on the block
To offer for sale.

[Middle English blok, from Old French bloc, from Middle Dutch.]

block′er n.
Synonyms: block, hide1, obscure, obstruct, screen, shroud
These verbs mean to cut off from sight: a tree that blocked the view; a road hidden by brush; mist that obscured the mountain peak; skyscrapers obstructing the sky; a fence that screens the alley; a face shrouded by a heavy veil.


1. (Electronics) electronics the interruption of anode current in a valve because of the application of a high negative voltage to the grid
2. (Communications & Information) internal congestion in a communication system that prevents the transmission of information
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.blocking - the act of obstructing or deflecting someone's movementsblocking - the act of obstructing or deflecting someone's movements
obstruction - getting in someone's way
interference - (American football) blocking a player's path with your body; "he ran interference for the quarterback"
trap block - (American football) an illegal block
parry - (fencing) blocking a lunge or deflecting it with a circular motion of the sword


n (psych) bloqueo
References in periodicals archive ?
She has denied the claims of violence, bribery, campaigns during the polling day, and blocking agents.
a revenue generating specialty pharmaceutical company focused on therapeutics for hospital and other acute care settings, today announced the acquisition of exclusive global rights to two novel neuromuscular blocking agents (NMBs) and a proprietary chemical reversal agent from Cornell University.
Neuromuscular blocking agents are most commonly implicated as the cause of anaphylactic reaction in anaesthesia practice.
In addition, the addict may use blocking agents that make impossible the detection of cocaine.
Neuromuscular blocking agents are most common agents leading to anaphylaxis perioperatively.
Regarding pediatric arrhythmia, Eisai has received approval of additional indications for pediatric patients for Tambocor Tablets in May 2010, and for the calcium channel blocking agents Vasolan Tablets 40 mg and Vasolan for intravenous injection 5 mg in May 2011.
ACE inhibitors/ARB antagonists, beta-adrenergic receptor blocking agents, diuretics, and inotropic drugs are the medications available for the treatment of congestive heart failure.
The achievement of mydriasis in conscious birds is only possible by using neuromuscular blocking agents such as curariform drugs.
All of these therapies--angiotensin-converting enzyme inhibitors or angiotensin II receptor blockers, beta-adrenergic blocking agents (betablockers), aldosterone antagonists, hydralazine/ isosorbide dinitrate, implantable cardioverter defibrillators, and cardiac resynchronization therapy--are effective in treating heart failure, with the benefits outweighing the risks.
Based on these data, the group of researchers published the following recommendations: to improve neuromuscular blocking agents, to follow good practices, and to design monitoring devices (1).
Twenty-five years ago a study published in this journal demonstrated that these clinical signs were inadequate for assessment of reversal of neuromuscular blocking agents (2).
Especially troubling, according to ISMP, is the fact that most drugs involved in the shortages are high-alert medications that are more likely to cause serious patient harm when involved in an error (such as propofol, heparin, morphine, neuromuscular blocking agents and chemotherapy agents).