breast /brest/ n. ［c］ 1. 胸脯：breast-deep water 齐胸深的水；the breast pocket of one’s jacket 上衣胸脯口袋The wheat is breast-high.小麦有齐胸高。2.乳房：breast cancer 乳腺癌 beat one’s breast 捶胸顿足：He beat his breast in agony. 他痛苦地捶胸顿足。