Bum
Here is the meaning and Word Scramble Game information for Bum
BUM7 is a valid Scrabble Word in NWL, formerly TWL (USA, Thailand, Canada)
BUM7 is a valid Scrabble Word in CSW, formerly SOWPODS (Other Countries)
BUM10 is a valid word in WWF
(n.) A humming noise.
(n.) The buttock.
(v. i.,) To make murmuring or humming sound.