n. Low land covered wholly or partially with water, but producing sedge, coarse grasses, or other aquatic plants; boggy land; a bog; a marsh: as, the bogs in Ireland, or the fens in Lincolnshire, Kent, and Cambridgeshire, England.n. Mud; mire.n. A disease affecting hops, caused by a quick-growing moss or mold. Imp. Dict.To forbid: same as fend : used in this form by boys in marbles and other games, in an exclamatory way, to check or block, according to understood rules, some move of an opposing player.n. A section in the work of the Arabic physician Avicenna, called the Canon.