Adverbial close up has 1 sense
  1. close up, at close range - very close; "without my reading glasses I can hardly see things close up"; "even firing at close range he missed"
,Noun close up has 1 sense
  1. closeup - a photograph taken at close range
    --1 is a kind of photograph, photo, exposure, pic
,Verb close up has 2 senses
  1. obstruct, obturate, impede, occlude, jam, block, close up - block passage through; "obstruct the path"
    --1 is one way to impede, hinder
    Sample sentences:
    Somebody ----s something
    Something ----s something
  2. close up, clam up, dummy up, shut up, belt up, button up, be quiet, keep mum - refuse to talk or stop talking; fall silent; "The children shut up when their father approached"
    Antonyms: open up
    Sample sentence:
    Somebody ----s
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