Batement
Pronunciation : Bate"ment
Part of Speech : n.
Etymology : [For Abatement. See 2d Bate.]
Definition : Defn: Abatement; diminution. Moxon. 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.
Source : Webster's Unabridged Dictionary, 1913