'Batement' definitions:
Definition of 'Batement'
From: GCIDE
- Batement \Bate"ment\, n. [For Abatement. See 2d Bate.] Abatement; diminution. --Moxon. [1913 Webster]
- Batement light (Arch.), a window or one division of a window having vertical sides, but with the sill not horizontal, as where it follows the rake of a staircase. [1913 Webster]