'Horn' in the Bible

There, Zadok the priest and Nathan the prophet are to anoint him as king over Israel. You are to blow the ram’s horn and say, ‘Long live King Solomon!’

And Zadok the priest took an horn of oil out of the tabernacle, and anointed Solomon. And they blew the trumpet; and all the people said, God save king Solomon.

Adonijah and all the invited guests who were with him heard the noise as they finished eating. Joab heard the sound of the ram’s horn and said, “Why is the town in such an uproar?”