Were of a great variety of forms, and were made of divers materials. Some were made of silver (Numbers 10:2), and were used only by the priests in announcing the approach of festivals and in giving signals of war. Some were also made of rams' horns (Joshua 6:8). They were blown at special festivals, and to herald the arrival of special seasons (Leviticus 23:24; 25:9; 1 Chronicles 15:24; 2Chr 29:27; Psalms 81:3; 98:6).
"Trumpets" are among the symbols used in the Book of Revelation (Revelation 1:10; 8:2). (See HORN .)
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain, copy freely.
Easton, Matthew George. "Entry for 'Trumpets'". "Easton's Bible Dictionary".