a single pulsation of an oscillation produced by adding two waves of different frequencies; has a frequency equal to the difference between the two oscillations(noun.phenomenon)
source: wordnet30
a member of the beat generation; a nonconformist in dress and behavior(noun.person)
To strike repeatedly; to lay repeated blows upon; as, to beat one's breast; to beat iron so as to shape it; to beat grain, in order to force out the seeds; to beat eggs and sugar; to beat a drum.(verb)
source: webster1913
To strike repeatedly; to inflict repeated blows; to knock vigorously or loudly.(verb)