Verbs

(v)close up, close, fold, shut down, close downcease to operate or cause to cease operating“The owners decided to move and to close the factory”, “My business closes every night at 8 P.M.”, “close up the shop”
(v)obstruct, obturate, impede, occlude, jam, block, close upblock passage through“obstruct the path”
(v)close up, closeunite or bring into contact or bring together the edges of“close the circuit”, “close a wound”, “close a book”, “close up an umbrella”
(v)close up, clam up, dummy up, shut up, belt up, button up, be quiet, keep mumrefuse to talk or stop talking; fall silent“The children shut up when their father approached”

Adverbs

(r)close up, at close rangevery close“without my reading glasses I can hardly see things close up”, “even firing at close range he missed”