Mammal Definition

măməl

mammals

noun

mammals

Any of a large class (Mammalia) of warmblooded, usually hairy vertebrates whose offspring are fed with milk secreted by the female mammary glands.

Webster's New World

An animal of the class Mammalia, characterized by being warm-blooded, having hair and feeding milk to its young.

Wiktionary

(paleontology) A vertebrate with three bones in the inner ear and one in the jaw.

Wiktionary

Synonyms:

Other Word Forms of Mammal

Singular:

mammal

Plural:

mammals

Modern Latin Mammalia, coined 1758 by Linnaeus for the class of mammals, from neuter plural of Late Latin mammalis (“of the breast"), from Latin mamma (“breast"), perhaps cognate with mamma (mother).

From Wiktionary
From Late Latin mammālis of the breast from Latin mamma breast mā-² in Indo-European roots

From American Heritage Dictionary of the English Language, 5th Edition