tab 1
(tăb)n.1. A projection, flap, or short strip attached to an object to facilitate opening, handling, or identification.
2. A small, usually decorative flap or tongue on a garment.
3. A small auxiliary airfoil that is attached to a larger one and that helps stabilize an aircraft.
4. A pull-tab.
tr.v. tabbed,
tab·bing,
tabs To supply with a tab or tabs.
[Origin unknown.]
tab 2
(tăb)n.1. Informal a. A bill or check, such as one for a meal in a restaurant.
b. Cost; price: The tab for upgrading the computers would be high.
2. A tabulator on a typewriter.
3. Computers a. A key on a computer keyboard that, when pressed, inserts a special ASCII character used for formatting text, as in indenting a line or block of text.
b. This special ASCII character.
intr.v. tabbed,
tab·bing,
tabs To press the tab on a typewriter or computer keyboard: Tab over to the next column.
Idiom: keep tabs on Informal To observe carefully over time: Let's keep tabs on expenditures.
tab 3
(tăb) Informal American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
tab
(tæb) n1. (Clothing & Fashion) a small flap of material, esp one on a garment for decoration or for fastening to a button
2. any similar flap, such as a piece of paper attached to a file for identification
3. (Aeronautics) a small auxiliary aerofoil on the trailing edge of a rudder, aileron, or elevator, etc, to assist in the control of the aircraft in flight. See also
trimtab 4. (Military) military Brit the insignia on the collar of a staff officer
5. chiefly US and Canadian a bill, esp one for a meal or drinks
6. (Recreational Drugs) dialect Scot and Northern English a cigarette
7. keep tabs on informal to keep a watchful eye on
vb,
tabs,
tabbing or tabbed (tr) to supply (files, clothing, etc) with a tab or tabs
[C17: of unknown origin]
tab
(tæb) n2. (Recreational Drugs) slang a portion of a drug, esp LSD or ecstasy
TAB
abbreviation for 1. (Medicine) typhoid-paratyphoid A and B (vaccine)
2. (Gambling, except Cards) Austral and NZ Totalizator Agency Board
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
tab1
(tæb)
n., v. tabbed, tab•bing. n. 1. a small flap, strap, loop, or similar appendage, as on a garment, used for pulling, hanging, or decoration.
2. a tag or label.
3. a small projection from a card, paper, or folder, used as an aid in filing.
4. Informal. a bill; check.
5. a small piece attached or intended to be attached, as to an automobile license plate.
6. a. a typewriter stop or computer command that moves the carriage, cursor, or printing element a predetermined number of spaces.
b. the key that activates such a stop or command.
7. a small airfoil hinged to the rear portion of a control surface, as to an elevator, aileron, or rudder.
v.t. 8. to furnish or ornament with tabs.
9. to name or designate.
v.i. 10. to operate the tab function on a typewriter or computer.
Idioms: keep tab(s) on, to maintain a watch over; record the activities of.
[1600–10; of uncertain orig.]
tab2
(tæb)
n. Informal. 2. a tablet, as of a drug.
[1960–65; by shortening]
tab.
1. table.
2. (in prescriptions) tablet.
[< Latin tabella]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.