block

noun

A large building divided into flats or offices, or a group of buildings.

"She lives in the new block of flats."

noun

A solid, often rectangular, piece of hard material, e.g., wood or stone.

"He used a concrete block for the foundation."

verb

To prevent movement or passage through something, or to hinder an action.

"The fallen tree blocked the road completely."

Thesaurus

Synonyms: stymie, blockade, hinder, obstruct, stymy, embarrass, cylinder block, engine block, mental block, auction block, pulley block, pulley-block

Antonyms: call back, call up, disengage, free, loosen up, recall, recollect, release, remember, retrieve, think, unblock