1. A solid piece of something (usually having flat rectangular sides) (synset 102855782)
    "the pyramids were built with large stone blocks"
  2. A rectangular area in a city surrounded by streets and usually containing several buildings (synset 108659720)
    "he lives in the next block"
  3. A three-dimensional shape with six square or rectangular sides (synset 113937623)
  4. A number or quantity of related things dealt with as a unit (synset 107970600)
    "he reserved a large block of seats"; "he held a large block of the company's stock"
  5. Housing in a large building that is divided into separate units (synset 102856275)
    "there is a block of classrooms in the west wing"
  6. (computer science) a sector or group of sectors that function as the smallest data unit permitted (synset 113647935)
    "since blocks are often defined as a single sector, the terms `block' and `sector' are sometimes used interchangeably"
  7. An inability to remember or think of something you normally can do;
    Often caused by emotional tension (synset 105653044)
    "I knew his name perfectly well but I had a temporary block"
  8. A simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope (synset 104026692)
  9. A metal casting containing the cylinders and cooling ducts of an engine (synset 103293136)
    "the engine had to be replaced because the block was cracked"
  10. An obstruction in a pipe or tube (synset 102856708)
    "we had to call a plumber to clear out the blockage in the drainpipe"
  11. A platform from which an auctioneer sells (synset 102759606)
    "they put their paintings on the block"
  12. The act of obstructing or deflecting someone's movements (synset 100563435)
  1. Render unsuitable for passage (synset 201480632)
    "block the way"; "barricade the streets"; "stop the busy road"
  2. Hinder or prevent the progress or accomplishment of (synset 202563025)
    "His brother blocked him at every turn"
  3. Stop from happening or developing (synset 202565578)
    "Block his election"; "Halt the process"
  4. Interfere with or prevent the reception of signals (synset 201058906)
    "Jam the Voice of America"; "block the signals emitted by this station"
  5. Run on a block system (synset 202449162)
    "block trains"
  6. Interrupt the normal function of by means of anesthesia (synset 202202937)
    "block a nerve"; "block a muscle"
  7. Shut out from view or get in the way so as to hide from sight (synset 202149973)
    "The thick curtain blocked the action on the stage"; "The trees obstruct my view of the mountains"
  8. Stamp or emboss a title or design on a book with a block (synset 201534280)
    "block the book cover"
  9. Obstruct (synset 201481963)
    "My nose is all stuffed"; "Her arteries are blocked"
  10. Block passage through (synset 201479113)
    "obstruct the path"
  11. Support, secure, or raise with a block (synset 201220488)
    "block a plate for printing"; "block the wheels of a car"
  12. Impede the movement of (an opponent or a ball) (synset 201149526)
    "block an attack"
  13. Be unable to remember (synset 200610654)
    "I'm drawing a blank"; "You are blocking the name of your first wife!"
  14. Shape by using a block (synset 200478459)
    "Block a hat"; "block a garment"
  15. Shape into a block or blocks (synset 200478313)
    "block the graphs so one can see the results clearly"
  16. Prohibit the conversion or use of (assets) (synset 200270309)
    "Blocked funds"; "Freeze the assets of this hostile government"

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