PenobscotPronunciation: /pɛˈnɒbskɒt/Definition of Penobscot noun (plural same) 1a member of an American Indian people of the Penobscot River valley in Maine. 2 [mass noun] the extinct Algonquian language of the Penobscot, a dialect of Eastern Abnaki. adjective relating to the Penobscot or their language. Origin:the name in AbnakiPenobscot in other Oxford dictionaries Definition of Penobscot in the US English dictionary