noun, plural Pe·nob·scots, (especially collectively) Pe·nob·scot for 2.
- a river flowing S from N Maine into Penobscot Bay. 350 miles (565 km) long.
- a member of a North American Indian people of the Penobscot River valley.
- the Eastern Algonquian language of the Penobscot, a dialect of Abenaki.