beat Look up beat at Dictionary.com
O.E. beatan "inflict blows on, thrash" (class VII strong verb; past tense beot, pp. beaten), from P.Gmc. *bautan (cf. O.N. bauta, O.H.G. bozan "to beat"), from PIE base *bhau- "to strike" (see batter (v.)). Of the heart, c.1200, from notion of it striking against the breast. Meaning "to overcome in a contest" is from 1610s (the source of the sense of "legally avoid, escape" in beat the charges, etc., attested from c.1920 in underworld slang). Meaning "strike cover to rouse or drive game" (M.E.) is source of beat around the bush (1570s), the metaphoric sense of which has shifted from "make preliminary motions" to "avoid, evade." Command beat it "go away" first recorded 1906 (though "action of feet upon the ground" was a sense of O.E. betan). Dead-beat (originally "tired-out") preserves the old pp. To beat off "masturbate" is recorded by 1960s. For beat generation see beatnik.