The refuse of winnowed corn. It was usually burned (Ex. 15:7; Isa. 5:24; Matt. 3:12). This word sometimes, however, means dried grass or hay (Isa. 5:24; 33:11). Chaff is used as a figure of abortive wickedness (Ps. 1:4; Matt. 3:12). False doctrines are also called chaff (Jer. 23:28), or more correctly rendered “chopped straw.” The destruction of the wicked, and their powerlessness, are likened to the carrying away of chaff by the wind (Isa. 17:13; Hos. 13:3; Zeph. 2:2).

the husk of corn or wheat which was separated from the grain by being thrown into the air, the wind blowing away the chaff, while the grain was saved. The carrying away of chaff by the wind is an ordinary scriptural image of the destruction of the wicked and of their powerlessness to resist God’s judgments. (Psalms 1:4; Isaiah 17:13; Hosea 13:3; Zephaniah 2:2)