ppl. a. [f. BUM v.2 + -ING2.] a. Buzzing, humming. b. † Bumming sound (obs.): Something of note, or worth listening to.
1599. Marston, Sco. Villanie, I. iv. 188. Hath rakt together some four thousand pound, To make his smug gurle beare a bumming sound In a young merchants care.
1616. Pasquil & Kath., III. 182. A thousand pound a yeere! Bar Ladie, thats a bumming sound.
1821. Clare, Vill. Minstr., I. 131. Bumming gad-flies ceased to tease.