thrum/θrʌm/ (thrummed, thrummed; thrumming)

vi

1. 发出低沉的轰轰声

• the deep thrumming of the engine 轰轰响的发动机

2. 随意地轻叩

• thrum on a table 用手指随意地轻叩桌子

3. 弹奏

• thrum on a guitar 信手弹奏吉他

vt

1. 随意地轻叩

• thrum a desk 用手指轻叩书桌

2. 弹奏

• thrum a harp 弹竖琴