n. The female of the domestic fowl: opposed to cock.n. Any female bird; especially, used attributively, equivalent to female: as, hen canary, hen sparrow, etc.n. In a general sense, the common domestic or barn-yard fowl (Gallus domesticus), or any specimen of this fowl, in all its varieties and without regard to gender; a chicken. See Gallus.n. A bivalve mollusk of the family Veneridæ and genus Tapes. At Hereford in England the name is given to two species, T. decussata, the purr, and T. aurea. See hen-clam.Hence: the more original form.To throw.To back down in a cowardly way; funk out: as, he henned at the last minute.