thruhm
 transitive verb
 1. to play (a stringed instrument or a tune) by plucking, esp. idly or repetitiously.
 As he spoke, he thrummed his guitar.
 2. to drum the fingers on.
 She sat thrumming the table and thinking.
  intransitive verb
 1. to pluck, or pluck a tune on, a stringed instrument.
 She thrummed on a ukelele.
 2. to drum with the fingers.
 Impatient, he thrummed on the counter with his fingertips.
 noun
 a muffled, repetitious sound; thrumming.
 When her neighbors play loud music, the thrum of the bass makes her head ache.
