Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb pin_down

3 senses of pin down

Sense 1
pin down, peg down, nail down, narrow down, narrow, specify -- (define clearly; "I cannot narrow down the rules for this game")
       => determine -- (fix in scope; fix the boundaries of; "the tree determines the border of the property")

Sense 2
trap, pin down -- (place in a confining or embarrassing position; "He was trapped in a difficult situation")
       => confine, detain -- (deprive of freedom; take into confinement)

Sense 3
pin down, pin up -- (attach with or as if with a pin; "pin up a picture")
       => attach -- (cause to be attached)