Definition of moose
plural moose
1
:a ruminant mammal (Alces alces) with humped shoulders, long legs, and broadly palmated antlers that is the largest existing member of the deer family and inhabits forested areas of Canada, the northern U.S., Europe, and Asia
2
capitalized
[Loyal Order of Moose]
:a member of a major benevolent and fraternal order 
