Hum

Definition:

(v. i.) To make a low, prolonged sound, like that of a bee in flight; to drone; to murmur; to buzz; as, a top hums.
(v. i.) To make a nasal sound, like that of the letter m prolonged, without opening the mouth, or articulating; to mumble in monotonous undertone; to drone.
(v. i.) To make an inarticulate sound, like h'm, through the nose in the process of speaking, from embarrassment or a affectation; to hem.
(v. i.) To express satisfaction by a humming noise.
(v. i.) To have the sensation of a humming noise; as, my head hums, -- a pathological condition.
(v. t.) To sing with shut mouth; to murmur without articulation; to mumble; as, to hum a tune.
(v. t.) To express satisfaction with by humming.
(v. t.) To flatter by approving; to cajole; to impose on; to humbug.
(n.) A low monotonous noise, as of bees in flight, of a swiftly revolving top, of a wheel, or the like; a drone; a buzz.
(n.) Any inarticulate and buzzing sound
(n.) The confused noise of a crowd or of machinery, etc., heard at a distance; as, the hum of industry.
(n.) A buzz or murmur, as of approbation.
(n.) An imposition or hoax.
(interj.) An inarticulate nasal sound or murmur, like h'm, uttered by a speaker in pause from embarrassment, affectation, etc.
(interj.) A kind of strong drink formerly used.
(interj.) Ahem; hem; an inarticulate sound uttered in a pause of speech implying doubt and deliberation.