pin down

Definitions of pin down
  1. verb
    attach with or as if with a pin
    synonyms: pin up
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    type of:
    cause to be attached
  2. verb
    place in a confining or embarrassing position
    synonyms: trap
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    type of:
    confine, detain
    deprive of freedom; take into confinement
  3. verb
    define clearly
    synonyms: nail down, narrow, narrow down, peg down, specify
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    make something concrete
    type of:
    fix in scope; fix the boundaries of
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