#1 bring down v. move something or somebody to a lower position; "take down the vase from the shelf". wn
#2 bring down v. cause the downfall of; of rulers; "The Czar was overthrown"; "subvert the ruling class". wn
#3 bring down v. impose something unpleasant; "The principal visited his rage on the students". wn
#4 bring down v. cause to come to the ground; "the pilot managed to land the airplane safely". wn
#5 bring down v. cause to be enthusiastic; "Her playing brought down the house". wn
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