relating to or denoting the earliest human inhabitants of the Americas, to circa 5000 bc. The date of their first arrival in America is debated (possibly up to 30,000 or 40,000 years ago, but artefacts do not become numerous until the Clovis period).
1 (the Palaeo-Indian) the Palaeo-Indian culture or period.
2a member of the Palaeo-Indian peoples.
Palaeo-Indian in other Oxford dictionaries
Definition of Palaeo-Indian in the US English dictionary