#1 thrum n. a thrumming sound; "he could hear the thrum of a banjo". wn
#2 thrum v. [hum] sound with a monotonous hum. wn
#3 thrum v. [strum] sound the strings of (a string instrument); "strum a guitar". wn
#4 thrum v. [drum, beat] make a rhythmic sound; "Rain drummed against the windshield"; "The drums beat all night". wn
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