close up

verbs

cease 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"
block passage through
"obstruct the path"
unite or bring into contact or bring together the edges of
"close the circuit"; "close a wound"; "close a book"; "close up an umbrella"
refuse to talk or stop talking; fall silent
"The children shut up when their father approached"
antonym

adverbs

very close
"without my reading glasses I can hardly see things close up"; "even firing at close range he missed"