From Old English 'brēost' (chest), from Proto-Germanic *breustą, possibly from PIE *bhreus- (to swell).
The front of the human chest; either of the two milk-producing glands on a woman's chest.
From Old English 'brēost,' from Proto-Germanic *breustą, possibly from PIE *bhreus- meaning 'to swell.' The primary meaning was simply 'chest' — the specifically female sense developed later. Key roots: *bhreus- (PIE: "to swell").