Etymology 1
From hum + -ing.
Adjective
humming (comparative more humming, superlative most humming)
- Making a hum sound.
- (archaic) Of ale or beer: very strong.
1889, John Bickerdyke, The Curiosities of Ale & Beer: An Entertaining History, page 13:But at night crowds of visitors called at his cot, / For he told a right marvellous tale; / Yet a stronger attraction by chance he had got, / A barrel of old humming ale.
Etymology 2
From Middle English hummynge, equivalent to hum + -ing.
Noun
humming (plural hummings)
- The sound of something that hums; a hum.
1969 December 8, New York Magazine, volume 2, number 49, page 70:There are some contemporary additions to these scattered fragments from Shakespeare. Mostly they are songs; sometimes they are various screechings and hummings […]