Pronunciation: (bakt), [key]
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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.