Definition of "moose"

moose¹

/muːs/

noun
plural moose or (dated, rare) mooses or (nonstandard, jocular) meese
1. The largest member of the deer family (Alces americanus, sometimes included in Alces alces), of which the male has very large, palmate antlers.
2. Any of the extinct moose-like deer of the genera Cervalces and Libralces.
  Quotations
  Europe’s giant beavers lived at the same time as the first moose, Libralces gallicus.
  2018, Tim Flannery, Europe: A Natural History, page 152
3. (figuratively, derogatory, colloquial) An ugly person.

moose²

/muːs/

noun
1. (US, military, slang) An Asian girl taken as a lover.
  Quotations
  In military bases in the rear areas it was common for soldiers to have a moose.
  2005, Rupert Nelson, Like the Rings of a Tree, page 279
  Even the lowest ranked serviceman, because of his salary, benefits, and status as an American occupationaire, could afford to “maintain a 'Moose' and still take care of his other obligations.
  2011, Michael Cullen Green, Black Yanks in the Pacific, page 75