2. The part of a canal lock below the lower gates.

TAILBLOCK
Tail"block`, n. (Naut.)

Defn: A block with a tail. See Tail, 9.

TAILBOARD
Tail"board`, n.

Defn: The board at the rear end of a cart or wagon, which can be removed or let down, for convenience in loading or unloading.

TAILED
Tailed, a.

Defn: Having a tail; having (such) a tail or (so many) tails; — chiefly used in composition; as, bobtailed, longtailed, etc. Snouted and tailed like a boar. Grew.

TAILING
Tail"ing, n.

1. (Arch.)

Defn: The part of a projecting stone or brick inserted in a wall.
Gwilt.