What is the meaning of Moose?

A large cervine mammal (Alces machlis, or A. Americanus), native of the Northern United States and Canada. The adult male is about as large as a horse, and has very large, palmate antlers. It closely resembles the European elk, and by many zoologists is considered the same species. See Elk.

Source: Webster’s Revised Unabridged Dictionary (1913), via OPTED