Webster's Revised Unabridged Dictionary · 1913

Humming

Humming , adjective

Emitting a murmuring sound; droning; murmuring; buzzing.

Humming , noun

A sound like that made by bees; a low, murmuring sound; a hum.

Collocations (2)

Hummingale , lively or strong ale. — Dryden

Humming-bird moth (Zoology) , a hawk moth. See Hawk moth, under Hawk, the bird.