humming

Hum may refer to:Hum (sound), a sound produced with closed lips, or by machinery, insects, or other periodic motionThe Hum, a phenomenon involving a persistent and invasive low-frequency noise of unknown origin which occurs in some geographic locations.Hum (band), a U.S. space-rock bandHum, Croatia, known as the smallest town in the worldHum (film), a 1991 Bollywood film starring Amitabh BachchanMains hum, an electric or electromagnetic phenomenon that causes a low frequency (50 or 60 Hz) audible signalHum Mountain, a mountain in SerbiaLand of Hum, an English translation of the Zahumlje region of modern HerzegovinaHum, a possible transliteration of the sixth syllable in Buddhist "Six syllable mantra" Om mani padme humHum., an abbreviation for HumanitiesHUM, Harakat ul-Mujahidin, an Islamic militant group based in Pakistan
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(p. pr. & vb. n.)
of Hum
  

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

(a.)
Emitting a murmuring sound; droning; murmuring; buzzing.
  

Noun
1. a humming noise; "the hum of distant traffic"
(synonym) hum
(hypernym) noise
(derivation) hum, buzz, seethe
2. the act of singing with closed lips
(hypernym) singing, vocalizing
(derivation) hum

Noun
1. the state of being or appearing to be actively engaged in an activity; "they manifested all the busyness of a pack of beavers"; "there is a constant hum of military preparation"
(synonym) busyness
(hypernym) action, activity, activeness
2. a humming noise; "the hum of distant traffic"
(synonym) humming
(hypernym) noise
(derivation) buzz, seethe
Verb
1. sing with closed lips; "She hummed a melody"
(hypernym) sing
(derivation) hummer
2. be noisy with activity; "This office is buzzing with activity"
(synonym) buzz, seethe
(hypernym) be
(hyponym) teem, pullulate, swarm
(derivation) humming
3. sound with a monotonous hum
(synonym) thrum
(hypernym) sound, go
(derivation) humming
4. make a low continuous sound; "The refrigerator is humming"
(hypernym) make noise, resound, noise
(derivation) humming