SalishPronunciation: /ˈseɪlɪʃ/Definition of Salish noun (plural same) 1a member of a group of American Indian peoples inhabiting areas of the north-western US and the west coast of Canada. 2 [mass noun] the group of related languages spoken by the Salish, now all extinct or nearly so. adjective relating to the Salish or their languages. Derivatives Salishan adjective Origin:a local name, literally 'Flatheads'Salish in other Oxford dictionaries Definition of Salish in the US English dictionary