hum
US /hʌm/
・UK /hʌm/
B2
noun
- A busy, active atmosphere.
- A low frequency noise from electrical equipment.
- A constant low sound
- A low, continuous, droning sound.
other
- To make a low frequency noise, from electrical equipment.
- To make a buzzing sound, like that of an insect in flight.
- To make a low, continuous sound like that of a bee; to sing with closed lips and without words.
verb
- To make a constant low sound
- To move very fast
- To sing a tune without opening the mouth
other
- To utter with a hum.