Easton's Bible Dictionary: M. G. Easton, M.A., D.D.

Alarm

A particular quivering sound of the silver trumpets to give warning to the Hebrews on their journey through the wilderness (Num. 10:5,6), a call to arms, or a war-note (Jer. 4:19, 49:2; Zeph. 1:16).

Original from The Bible Foundation - bf.org. They claim public domain status for their original text.