WordNet (r) 3.0 (2006):
nail down v 1: succeed in obtaining a position; "He nailed down a spot at Harvard" [syn: nail down, nail, peg] 2: define clearly; "I cannot narrow down the rules for this game" [syn: pin down, peg down, nail down, narrow down, narrow, specify] 3: make final; put the last touches on; put into final form; "let's finalize the proposal" [syn: finalize, finalise, settle, nail down]