Synonyms of pin down

Verb

1. pin down, peg down, nail down, narrow down, narrow, specify, determine

usage: define clearly; "I cannot narrow down the rules for this game"

2. trap, pin down, confine, detain

usage: place in a confining or embarrassing position; "He was trapped in a difficult situation"

3. pin down, pin up, attach

usage: attach with or as if with a pin; "pin up a picture"