BAT n.
ying mammals, in which the wings are formed by a membrane stretched between the elongated fingers, legs, and tail. The common bats are small and insectivorous. See Cheiroptera and Vampire. Bat tick (Zoöl.), a wingless, dipterous insect of the genus Nycteribia, parasitic on bats.
BATTEN n.
d used in fastening the edges of a tarpaulin to the deck, also around masts to prevent chafing. (c) A long, thin strip used to strengthen a part, to cover a crack, etc. Batten door (Arch.), a door made of boards of the whole length of the door, secured by battens nailed crosswise.