Beat (To)
.To overcome or get the better of. This does not mean to strike, which is the Anglo-Saxon beátan, but to better, to be better, from the Anglo-Saxon verb bétan.
Dead beat. So completely beaten or wersted as to have no leg to stand on. Like a dead man with no fight left in him; quite tired out.
“Iʹm dead beat, but I thought Iʹd like to come in and see you all once more.”—Roe: Without a Home, p. 32.
That beats Banʹagher. Wonderfully inconsistent and absurd — exceedingly ridiculous. Banagher is a town in Ireland, on the Shannon, in King’s County. It formerly sent two members to Parliament, and was, of course, a famous pocket borough. When a member spoke of a family borough where every voter was a man employed by the lord, it was not unusual to reply, “Well, that beats Banagher.”
“‘Well,ʹ says he, ‘to gratify them I will. So just a morsel. But, Jack, this beats Bannagherʹ (sic).”—W. B. Yeats: Fairy Tales of the Irish Peasantry, p. 196.