( n. pl. )
The highest class of Vertebrata. The young are nourished for a time by milk, or an analogous fluid, secreted by the mammary glands of the mother.
( n. pl. )
The highest class of Vertebrata. The young are nourished for a time by milk, or an analogous fluid, secreted by the mammary glands of the mother.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012