a heavy sweater of gray, unbleached wool, knitted by the Cowichan Indians of southern Vancouver Island, distinguished by symbolic designs, originally black and white, now sometimes multi-colored.
See also: Cowichan (Indian) sweater
- 1945  In a good year the Siwash sweaters may retail for a gross sum of $10,000, half of which is taken in by one small store on the highway leading into Duncan.
- 1948  [The Siwashs on the west coast of British Columbia make the best kind [of sweater] from unspun yarn.]