Algonquian \Al*gon"qui*an\, a. Pertaining to or designating the most extensive of the linguistic families of North American Indians, their territory formerly including practically all of Canada east of the 115th meridian and south of Hudson's Bay and the part of the United States east of the Mississippi and north of Tennessee and Virginia, with the exception of the territory occupied by the northern Iroquoian tribes. There are nearly 100,000 Indians of the Algonquian tribes, of which the strongest are the Ojibwas (Chippewas), Ottawas, Crees, Algonquins, Micmacs, and Blackfeet. -- n. An Algonquian Indian. [Webster 1913 Suppl.]

Algonquin

Source: The Collaborative International Dictionary of English v.0.48
 

Algonquian adj : of or relating to an Algonquian tribe or its people or language [syn: Algonkian, Algonquin]

noun

1: a member of any of the North American Indian groups speaking an Algonquian language and originally living in the subarctic regions of eastern Canada; many Algonquian tribes migrated south into the woodlands from the Mississippi River to the Atlantic coast [syn: Algonquin]
2: family of North American Indian languages spoken from Labrador to South Carolina and west to the Great Plains [syn: Algonquin, Algonquian language]

Source: WordNet (r) 2.0
 

Algonquian \Al*gon"qui*an\, a. Pertaining to or designating the most extensive of the linguistic families of North American Indians, their territory formerly including practically all of Canada east of the 115th meridian and south of Hudson's Bay and the part of the United States east of the Mississippi and north of Tennessee and Virginia, with the exception of the territory occupied by the northern Iroquoian tribes. There are nearly 100,000 Indians of the Algonquian tribes, of which the strongest are the Ojibwas (Chippewas), Ottawas, Crees, Algonquins, Micmacs, and Blackfeet. -- n. An Algonquian Indian.

Source: Webster's Revised Unabridged Dictionary (1913)