beatbox
From Longman Dictionary of Contemporary Englishbeatboxbeat‧box /ˈbiːtbɒks $ -bɑːks/ noun 1 (also beatboxer /-bɒksə $ -bɑːksər/) [countable] someone who provides the words or other spoken sounds that go with hip hop2 [uncountable] a computer program that is used to mix the sounds of popular electronic music with a strong beat, or the type of music produced by this —beatboxing noun [uncountable]