To emit a continuous low droning sound like that of the speech sound (m) when prolonged.
예문
1. A bee hums. (벌이 윙윙거린다) 2. hum to oneself (혼자서 콧노래를 흥얼거리다) 3. hum a child to sleep (콧노래를 불러 아이를 재우다) 4. the household humming with wedding preparation (결혼 준비로 분주한 집안) 5. a town humming with activity (활기가 넘치는 도시)
