/ ˈmæml; NAmE / noun
any animal that gives birth to live babies, not eggs, and feeds its young on milk. Cows, humans and whales are all mammals.
► mam·ma·lian / mæˈmeɪliən; NAmE / adjective
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WORD ORIGIN
early 19th cent.: anglicized form (first used in the plural) of modern Latin mammalia , neuter plural of Latin mammalis (adjective), from mamma breast.