Definition of canvas as a textile term clarifies material composition, weave and technical jute-canvas specifications. Defines canvas as a coarse, strong unbleached cloth made from vegetable fibres (hemp, flax, cotton, jute) used for sails, tents and paintings, with characteristic double-warp construction and multi-ply yarns. The Indian Standard Specification for Jute Canvas defines it as a plain weave cloth wholly of jute with double warp and single weft, specifying minimum weight and thread counts as definitional criteria.