/bakt/ , adj.
1. having a back, backing, setting, or support (often used in combination): a low-backed sofa.
2. (of fabric) having an extra set of threads in either the warp or the weft to provide added warmth. Cf. double cloth .
3. Photog. (of a film or plate) coated with a substance for absorbing light and thereby reducing halation.
[ 1350-1400; ME; see BACK 1 , -ED 3 ]