(1):

(v. t.) Anything steeped, or dipped and softened, in any liquid; especially, something dipped in broth or liquid food, and intended to be eaten.

(2):

(v. t.) Anything given to pacify; - so called from the sop given to Cerberus, as related in mythology.

(3):

(v. t.) A thing of little or no value.

(4):

(v. t.) To steep or dip in any liquid.