Herb

(1.) Heb. 'eseb, any green plant; herbage (Gen. 1:11, 12, 29,
30; 2:5; 3:18, etc.); comprehending vegetables and all green
herbage (Amos 7:1, 2).

(2.) "Yarak", green; any green thing; foliage of trees (2
Kings 19:26; Ps. 37:2); a plant; herb (Deut. 11:10).

(3.) "Or", meaning "light" In Isa. 26:19 it means "green
herbs;" in 2 Kings 4:39 probably the fruit of some plant.

(4.) "Merorim", plural, "bitter herbs," eaten by the
Israelites at the Passover (Ex. 12:8; Num. 9:11). They were
bitter plants of various sorts, and referred symbolically to the
oppression in Egypt.