'Batten door' definitions:

Definition of 'Batten door'

From: GCIDE

Batten \Bat"ten\, n. [F. b[^a]ton stick, staff. See Baton.] A strip of sawed stuff, or a scantling; as, (a) pl. (Com. & Arch.) Sawed timbers about 7 by 2 1/2 inches and not less than 6 feet long. --Brande & C. (b) (Naut.) A strip of wood 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. [1913 Webster]
Batten door (Arch.), a door made of boards of the whole length of the door, secured by battens nailed crosswise. [1913 Webster]