tail-bay
Tail"-bay`, n. 1. (Arch.) Defn: One of the joists which rest one end on the wall and the other on a girder; also, the space between a wall and the nearest girder of a floor. Cf. Case-bay. 2. The part of a canal lock below the lower gates.
Tail"-bay`, n. 1. (Arch.) Defn: One of the joists which rest one end on the wall and the other on a girder; also, the space between a wall and the nearest girder of a floor. Cf. Case-bay. 2. The part of a canal lock below the lower gates.