Salmon in Fausset's Bible Dictionary

A hill near Shechem on which Abimelech cut down the boughs with which they set on fire the tower of Shechem. Salmon means shady, dark (Psalm 68:14). The brightness of prosperity after the gloom of the conflict was like the glittering white snow which covers dark Salmon's forests (Judges 9:48; Mark 9:3). Or else (Maurer) Canaan had the same snowy appearance, covered over With the corpses of the slain, as Salmon when its trees were cut down by Abimelech changed its dark color for a white one. Joel 1:7, "He hath barked my figtree ... the branches are made white." The blanching bones too may be referred to.