Citations:bum

buttocks

 * 1595-96 Shakespeare, William, A Midsummer Night's Dream, Act II, scene i:
 * Puck: ...The wisest aunt, telling the saddest tale, Sometime for three-foot stool mistaketh me; Then slip I from her bum, down topples she, ...
 * 1638 Herbert, Sir Thomas Some years travels into divers parts of Asia and Afrique
 * ...the female ſex each new Moone defying pale fac't Cynthia by turning up their bummes, imaging her the cauſe of their diſtempers.
 * 1666–1671 (first published 1747), poem To My More Than Meritorious Wife, by John Wilmot 2nd Earl of Rochester (published in The Works of The Earl of Rochester, Yale, 1968):
 * With low-made legs and sugared speeches, Yielding to your fair bum the breeches, …

other senses

 * 1934, Rex Stout, Fer-de-Lance, 1992 Bantam edition, ISBN 0553278193, page 165:
 * I was always glad to be doing something, but I was not so liable to burst from joy when I suspected that my activity was going to turn out to be nothing but discarding from a bum hand.