1. verb; the attempt made by one to vocally replicate the sounds that would normally eminate from a drum set, drum machine or drum loop through a series of noises or popping sounds made with the mouth. 'beatboxing' is used throughout the hip-hop scene, and talented 'beatboxers
' can be found in several urban settings.
2. noun; a drum machine.
3. noun; slang for a boombox