"to make a shrill sound," mid-15c., from a Scandinavian source (compare Norwegian skyrla, skrella "to shriek"), of imitative origin. In reference to bagpipes, it is attested by 1660s and now rarely used otherwise. As a noun 1510s from the verb.
雙語例句
1. The skirl of a police whistle split the stillness ( Sax Rohmer )