'Tail-bay' definitions:

Definition of 'Tail-bay'

From: GCIDE
  • Tail-bay \Tail"-bay`\, n.
  • 1. (Arch.) 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. [1913 Webster]
  • 2. The part of a canal lock below the lower gates. [1913 Webster]