Noun
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a humming noise
"the hum of distant traffic"
-
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
- harkat ul mujahidin - harkat ul ansar - hua - harkat ul mujahedeen - al faran - movement of holy warriors -
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"
Verb
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make a low continuous sound
"The refrigerator is humming"
-
sound with a monotonous hum
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be noisy with activity
"This office is buzzing with activity"
-
sing with closed lips
"She hummed a melody"