From WordNet (r) 3.0 (2006):
din
n 1: a loud harsh or strident noise [syn: blare, blaring,
cacophony, clamor, din]
2: the act of making a noisy disturbance [syn: commotion,
din, ruction, ruckus, rumpus, tumult]
v 1: make a resonant sound, like artillery; "His deep voice
boomed through the hall" [syn: boom, din]
2: instill (into a person) by constant repetition; "he dinned
the lessons into his students"