verb
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(an insect) to make a hissing or buzzing sound (while flying).
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(something once heard) to be repeated as echo or be felt (by a person) so; to be resounding or echoing (in one's ears).
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(a ringing or buzzing sound) to be produced continuously, in the ear (not caused by external stimulus).
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to express one's displeasure, discontentment, defiance, etc. in a low, murmuring voice.