hummed

intransitive verb hummed, humming

1. to make a low, continuous, murmuring sound like that of a bee or a motor
2. to sing with the lips closed, not producing words
3. to give forth a confused, droning sound: a room humming with voices
4. Informal to be busy or full of activity

Origin: ME hummen, of echoic orig., as in Ger hummel, bumblebee, MDu hommeln, hum

transitive verb

1. to sing (a tune, etc.) with the lips closed
2. to produce an effect on by humming: to hum a child to sleep

noun

1. the act of humming
2. a continuous, murmuring sound