Coulter
Easton, 1897
(1 Samuel 13:20, 1 Samuel 13:21), an agricultural instrument, elsewhere called "ploughshare" (Isaiah 2:4; Micah 4:3; Joel 3:10). It was the facing-piece of a plough, analogous to the modern coulter.
Dictionary: M. G. Easton, Illustrated Bible Dictionary (1897, public domain).