Main entry: baffle, baffle board
Definition: a flat plate that controls or directs the flow of fluid or energy
Definition: check the emission of (sound)
Main entry: dumbfound, bewilder, baffle, beat, amaze, puzzle, pose, mystify, nonplus, perplex, stick, stupefy, flummox, gravel, get, vex
Definition: be a mystery or bewildering to
Usage: This beats me!; Got me--I don't know the answer!; a vexing problem; This question really stuck me
Main entry: spoil, scotch, queer, thwart, bilk, baffle, foil, frustrate, cross
Definition: hinder or prevent (the efforts, plans, or desires) of
Usage: What ultimately frustrated every challenger was Ruth's amazing September surge; foil your opponent