Meaning & Definition of Hum in English

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"

2. 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

3. A humming noise

• "The hum of distant traffic"

1. Sing with closed lips

• "She hummed a melody"

2. Be noisy with activity

• "This office is buzzing with activity"

3. Sound with a monotonous hum

4. Make a low continuous sound

• "The refrigerator is humming"