To use one’s mouth, lips, tongue, voice, etc. as a percussive instrument to create beats and rhythms for music, mainly hip hop.(verb)
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Use "beatbox" in a sentence
"Watching a man make noises into a mic (aka beatbox) for an hour is possibly one of the most soul-destroying and mind-numbingly things you could ever do."
"Two hunters created a turkey call beatbox, which has become an online hit."
"Learn how to "beatbox" with your guitar, play drums with an acoustic!"