twrf

Etymology
From, from , from. .

Noun

 * 1) disturbance, tumult, uproar
 * 2)  thunderclap
 * 3)  mob, crowd, throng, multitude
 * 1)  mob, crowd, throng, multitude

Usage notes
When referring to thunder, Welsh may employ the singular or plural  to correspond to English collective noun  depending on the context, e.g.