כְּאֵב II m. (b. h.; preced.) 1) heaviness, pain. Ber. 55ᵃ כ׳ לב heaviness of heart (fretfulness). Gen. R. s. 67, end כ׳ על כ׳ grief added to grief; a. e. —2) grievous offence. Deut. R. s. 3 (ref. to מכאביו, Ex. III, 7) יודע אני מה כ׳ וכ׳ I know what grievous offence they are going to commit, v. כָּאֵב.