The Collaborative International Dictionary of English v.0.48:
Din \Din\, v. t. [imp. & p. p. Dinned; p. pr. & vb. n.
Dinning.] [AS. dynian. See Din, n.]
1. To strike with confused or clanging sound; to stun with
loud and continued noise; to harass with clamor; as, to
din the ears with cries.
2. To utter with a din; to repeat noisily; to ding.
This hath been often dinned in my ears. --Swift.
To din into, to fix in the mind of another by frequent and
noisy repetitions. --Sir W. Scott.