noun:

1. A fixed-length group of bits making up part of a message.
2. A discrete group of vines in a vineyard, often distinguished from others by variety, clone, canopy training method, irrigation infrastructure, or some combination thereof.
3. A chopping block: a cuboid base for cutting or beheading.
4. The distance from one street to another in a city or suburb that is built (approximately) to a grid pattern.
5. A mould on which hats, bonnets, etc., are shaped.
6. A wig block: a simplified head model upon which wigs are worn.
7. A portion of a macromolecule, comprising many units, that has at least one feature not present in adjacent portions.
8. A logical data storage unit containing one or more physical sectors (see cluster).
9. An action to interfere with the movement of an opposing player or of the object of play (ball, puck).
10. A contiguous range of Unicode code points used to encode characters of a specific type; can be of any size evenly divisible by 16, up to 65,536 (a full plane).
11. A piece of hard wood on which a stereotype or electrotype plate is mounted.
12. A logical extent or region; a grouping or apportionment of like things treated together as a unit.
13. A case or frame housing one or more sheaves (pulleys), used with ropes to increase or redirect force, for example as part of lifting gear or a sailing ship's rigging. See also block and tackle.
14. A blockhead; a stupid fellow; a dolt.
15. A region of code in a program that acts as a single unit, such as a function or loop.
16. A physical area or extent of something, often rectangular or approximately rectangular.
17. A section of split logs used as fuel.
18. A type of temporary or permanent ban which automatically prevents the blocked user from editing pages of a particular wiki.
19. A joined group of four (or in some cases nine) postage stamps, forming a roughly square shape.
20. A section of a railroad where the block system is used.
21. Something that prevents something from passing.
22. Solitary confinement.
23. The human head.
24. A contiguous group of urban lots of property, typically several acres in extent, not crossed by public streets.
25. A cellblock.
26. A large, roughly cuboid building.
27. Misspelling of bloc.
28. A set of sheets (of paper) joined together at one end, forming a cuboid shape.
29. Interference or obstruction of cognitive processes.
30. The perch on which a bird of prey is kept.
31. A substantial, often approximately cuboid, piece of any substance.

verb:

1. To play a block shot.
2. To fill or obstruct (something) so that it is not possible to pass.
3. To prevent (something from happening or someone from doing something).
4. To disable communication via telephone, instant messaging, etc. with (someone undesirable).
5. To shape or sketch out roughly.
6. To wait.
7. To place, on a user of a wiki, a type of temporary or permanent ban which automatically prevents the recipient from editing pages of the wiki.
8. To knock (a person's hat) down over their eyes.
9. To impede (an opponent or opponent's play).
10. To hit with a block.
11. To stretch or mould (a knitted item, a hat, etc.) into the desired shape.
12. To prevent (something or someone) from passing.
13. To specify the positions and movements of the actors for (a section of a play).

name:

1. A surname​.