Salish Syllabification: (Sa·lish)Pronunciation: /ˈsāliSH/Definition of Salish noun (plural same) 1a member of a group of American Indian peoples inhabiting areas of the northwestern US and British Columbia. datedanother name for the Flathead people (see flathead). 2the group of related languages spoken by the Salish. adjective of or relating to the Salish or their languages. Derivatives SalishanPronunciation: /-ən/ adjective Origin:the Flathead nameSalish in other Oxford dictionaries Definition of Salish in the British & World English dictionary