noun

• (anatomy, plural mammae) The milk-secreting organ of female humans and other mammals which includes the mammary gland and the nipple or teat; a breast; an udder.
• (meteorology) An accessory cloud like a mammary in appearance, which can form on the underside of most cloud genera.
• Alternative spelling of mama: mother. [(hypocoristic, usually childish, Canada, US) Mother, female parent.]