Definition of "hum"
noun:
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A hummed tune, i.e. created orally with lips closed.
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An often indistinct sound resembling human humming.
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Busy activity, like a beehive's buzz.
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Unpleasant odour.
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verb:
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To make a sound from the vocal chords without pronouncing any real words, with one's lips closed.
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To express of affect by humming.
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To drone like certain insects naturally do in motion, or sounding similarly.
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To buzz, be busily active like a beehive.
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To produce low sounds which blend continuously.
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To reek, smell bad.
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To deceive, or impose on one by some story or device.
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interjection:
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Hmm; an inarticulate sound uttered in a pause of speech implying doubt and deliberation.
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