from The American Heritage Dictionary of the English Language, 4th Edition
A blockhead.
from The American Heritage Dictionary of the English Language, 4th Edition
A group of four or more unseparated postage stamps forming a rectangle.
from The American Heritage Dictionary of the English Language, 4th Edition
A large building divided into separate units, such as apartments.
from The American Heritage Dictionary of the English Language, 4th Edition
A length of railroad track controlled by signals.
from The American Heritage Dictionary of the English Language, 4th Edition
phrasal-verb
Block out To cover over so as to be illegible: block out sensitive information from a document before releasing it.
from The American Heritage Dictionary of the English Language, 4th Edition
Block out To repress (a traumatic event, for example) from conscious memory.
from The American Heritage Dictionary of the English Language, 4th Edition
idiom
Go on the block To be offered for sale.
from The American Heritage Dictionary of the English Language, 4th Edition
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.
from The American Heritage Dictionary of the English Language, 4th Edition
Put on the block To offer for sale.
from The American Heritage Dictionary of the English Language, 4th Edition
verb-transitive
Medicine To interrupt or obstruct the proper functioning of (a physiological process), especially by the use of drugs.
from The American Heritage Dictionary of the English Language, 4th Edition
Psychology To fail to remember.
from The American Heritage Dictionary of the English Language, 4th Edition
Sports To impede the movement of (an opponent or the ball) by physical interference.
from The American Heritage Dictionary of the English Language, 4th Edition
To indicate broadly without great detail; sketch. Often used with out: block out a plan of action; block out stage movements.
from The American Heritage Dictionary of the English Language, 4th Edition
To run (trains) on a block system.
from The American Heritage Dictionary of the English Language, 4th Edition
verb-intransitive
Sports To obstruct the movement of an opponent.
from The American Heritage Dictionary of the English Language, 4th Edition
To suffer a mental block. Often used with on: I blocked on his name.
from The American Heritage Dictionary of the English Language, 4th Edition
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