Simple Definition of mammal
: a type of animal that feeds milk to its young and that usually has hair or fur covering most of its skin
Full Definition of mammal
: any of a class (Mammalia) of warm-blooded higher vertebrates (as placentals, marsupials, or monotremes) that nourish their young with milk secreted by mammary glands, have the skin usually more or less covered with hair, and include humans
Examples of mammal
Human beings, dogs, and cats are all mammals.
Origin of mammal
New Latin Mammalia, from Late Latin, neuter plural of mammalis of the breast, from Latin mamma breast
First Known Use: 1826
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