Medical Term
breast
also: breasts
the MAMMARY GLAND that produces milk. Each breast has a number of compartments with lobules surrounded by fatty tissue and muscle fibres. Milk formed in the lobules gathers in branching tubes or ducts that together form lactiferous ducts. Near the nipple the ducts form ampullae (small 'reservoirs) from which the ducts discharge through the nipple.
Source: mediLexicon corpus · slug
breast