baffle


baffle (http://definr.com/baffle)

     n : a flat plate that controls or directs the flow of fluid or
         energy [syn: baffle board]
     v 1: be a mystery or bewildering to: "This beats me!" "Got me--I
          don't know the answer!" [syn: perplex, get, puzzle,
           mystify, beat, bewilder, flummox, stupefy, stupify,
           nonplus, gravel, amaze, dumbfound]
     2: hinder or prevent (the efforts, plans, or desires) of; "What
        ultimately frustrated every challenger was Ruth's amazing
        September surge"; "foil your opponent" [syn: thwart, queer,
         spoil, scotch, foil, cross, frustrate, bilk]
     3: check the emission of (sound) [syn: regulate]