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Definition of Hum
1. Verb. Sing with closed lips. "They will hum the duet"; "She hummed a melody"
2. Noun. The state of being or appearing to be actively engaged in an activity. "There is a constant hum of military preparation"
Generic synonyms: Action, Activeness, Activity
Derivative terms: Busy, Busy, Busy
3. Verb. Be noisy with activity. "The streets hum with crowds"; "This office is buzzing with activity"
Generic synonyms: Be
Specialized synonyms: Pullulate, Swarm, Teem
Derivative terms: Buzz, Humming
4. Noun. An Islamic fundamentalist group in Pakistan that fought the Soviet Union in Afghanistan in the 1980s; now operates as a terrorist organization primarily in Kashmir and seeks Kashmir's accession by Pakistan.
Category relationships: Act Of Terrorism, Terrorism, Terrorist Act
Generic synonyms: Foreign Terrorist Organization, Fto, Terrorist Group, Terrorist Organization
Geographical relationships: Islamic Republic Of Pakistan, Pakistan, West Pakistan
5. Verb. Sound with a monotonous hum. "The streets hum with cars "
6. Noun. A humming noise. ; "The hum of distant traffic"
7. Verb. Make a low continuous sound. "The refrigerator is humming"
Definition of Hum
1. 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.
2. v. t. To sing with shut mouth; to murmur without articulation; to mumble; as, to hum a tune.
3. 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.
4. interj. Ahem; hem; an inarticulate sound uttered in a pause of speech implying doubt and deliberation.
Definition of Hum
1. Noun. A hummed tune, i.e. created orally with lips closed. ¹
2. Noun. An often indistinct sound resembling human humming. ¹
3. Noun. Busy activity, like a beehive's buzz ¹
4. Noun. (UK slang) unpleasant odour. ¹
5. Verb. (intransitive) To make a sound from the vocal chords without pronouncing any real words, with one's lips closed. ¹
6. Verb. (transitive) To express of affect by humming ¹
7. Verb. (intransitive) To drone like certain insects naturally do in motion, or sounding similarly ¹
8. Verb. (intransitive) To buzz, be busily active like a beehive ¹
9. Verb. (intransitive) To produce a low sounds which blend continuously ¹
10. Verb. (British) To reek, smell bad. ¹
11. Verb. (British) To deceive, or impose on one by some story or device. ¹
12. Interjection. hmm; an inarticulate sound uttered in a pause of speech implying doubt and deliberation. ¹
¹ Source: wiktionary.com
Definition of Hum
1. to sing without opening the lips or saying words [v HUMMED, HUMMING, HUMS]
Medical Definition of Hum
1.