on board

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a. A long flat slab of sawed lumber; a plank.
b. A long flat slab of another material, used as a structural member.
2. A flat, rigid, often rectangular piece of material used as a surface upon which to work: a cutting board; an ironing board.
3. A flat piece of rigid material designed to display information, especially:
a. A blackboard.
b. A bulletin board.
c. A scoreboard.
d. A toteboard.
4. Sports
a. A flat piece of material designed or equipped to be ridden as a sport, especially a snowboard, skateboard, or surfboard.
b. A diving board.
c. A backboard.
5. A flat, rigid piece of material on which a game is played, such as a checkerboard or chessboard.
a. A table at which official meetings are held; a council table.
b. An organized body of administrators or investigators: a board of trustees; a board of directors.
a. A table, especially one set for serving food.
b. Food or meals considered as a whole: board and lodging.
8. boards
a. Sports The wooden structure enclosing an area for skating, such as the ice on which hockey is played, or enclosing a playing area, as for indoor soccer.
b. A theater stage.
9. Basketball A rebound.
a. An electrical-equipment panel.
b. Computers A circuit board.
11. Nautical
a. The side of a ship.
b. A leeboard.
c. A centerboard.
12. Obsolete A border or edge.
v. board·ed, board·ing, boards
1. To cover or close with boards: board up a broken window.
a. To furnish with meals in return for pay.
b. To house where board is furnished: board a horse at a stable.
a. To enter or go aboard (a vehicle or ship).
b. To allow (passengers) on board.
c. Nautical To come alongside (a ship).
4. Sports To force (an opposing hockey player) into the boards with a body check.
5. Obsolete To approach.
1. To receive meals or food and lodging as a paying customer.
2. Sports To use a snowboard, skateboard, surfboard, or similar item.
across the board
So as to affect or include all people, classes, or categories: raised taxes across the board.
on board
1. Aboard.
2. Ready to participate or be included; amenable: The entire class was on board for the excursion to the park.

[Middle English bord, from Old English.]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adv.1.on board - on a ship, train, plane or other vehicleon board - on a ship, train, plane or other vehicle
References in classic literature ?
On the day following Queequeg's signing the articles, word was given at all the inns where the ship's company were stopping, that their chests must be on board before night, for there was no telling how soon the vessel might be sailing.
He told me was determined to go, but found it would be impossible for him to be discharged time enough for going in the same ship, and which was more than all, he began to question whether they would give him leave to go in what ship he pleased, though he did voluntarily transport himself; but that they would see him put on board such a ship as they should direct, and that he would be charged upon the captain as other convict prisoners were; so that he began to be in despair of seeing me till he came to Virginia, which made him almost desperate; seeing that, on the other hand, if I should not be there, if any accident of the sea or of mortality should take me away, he should be the most undone creature there in the world.
They swarmed on board, each drumming for his own boarding-house, and each with a bottle of free whisky inside his shirt.
A skiff covered with rich carpets and cushions of crimson velvet was immediately lowered into the water, and as Don Quixote stepped on board of it, the leading galley fired her gangway gun, and the other galleys did the same; and as he mounted the starboard ladder the whole crew saluted him (as is the custom when a personage of distinction comes on board a galley) by exclaiming "Hu, hu, hu," three times.
On the question of the monster there was no doubt in his mind, and he would not allow the existence of the animal to be disputed on board.
They had been seen on the Tower Wharf that morning, embarking on board the steamer bound for Rotterdam.
Captain Thorn was an honest, straighforward, but somewhat dry and dictatorial commander, who, having been nurtured in the system and discipline of a ship of war, and in a sacred opinion of the supremacy of the quarter-deck, was disposed to be absolute lord and master on board of his ship.
and their surprise at his accounts, at learning the degree of accommodation and arrangement which was practicable, drew from him some pleasant ridicule, which reminded Anne of the early days when she too had been ignorant, and she too had been accused of supposing sailors to be living on board without anything to eat, or any cook to dress it if there were, or any servant to wait, or any knife and fork to use.
But really, I don't see how, from the description you have, you will be able to recognise your man, even if he is on board the Mongolia.
That is, subconsciously, he was aware that not alone his own food, but the food of all on board found its source in the man and woman.
It would take a clever man to find that out, as things are on board now," Mr.
One gets jolly good dinners on board these ships," remarked one of our band.