ETYM AS. dyne, dyn; akin to Icel. dynr, and to AS. dynian to resound, Icel. dynja to pour down like hail or rain; cf. Skr. dhuni roaring, a torrent, dhvan to sound. Related to Dun to ask payment.
Loud, confused, harsh noise; a loud, continuous, rattling or clanging sound; clamor; roar.