1. [ adverb ] very close
Synonyms: at_close_range

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

2. [ verb ] block passage through
Synonyms: obstruct impede occlude block obturate jam

"obstruct the path"

Related terms: free impede barricade clog blockade dam suffocate tie_up barricade barricade screen land_up obstruction blocking obturator obstruction
3. [ verb ] refuse to talk or stop talking; fall silent
Synonyms: shut_up be_quiet belt_up button_up dummy_up keep_mum clam_up

"The children shut up when their father approached"

Related terms: open_up
Similar spelling:   closeup