1
- a woman's chest（女人的）胸部：
her ample bosom
她那丰满的胸部
mass noun the dress offered a fair display of bosom.这条连衣裙很好地勾勒出了胸部曲线。
1.1
- （一般作bosoms）a woman's breast（女人的）乳房。
1.2
- a part of a woman's dress covering the chest（女装的）胸襟。
1.3
- the space between a person's clothing and their chest used for carrying things胸前, 怀：
he carried a letter in his bosom.
他怀里揣着一封信。
1.4
the bosom of
poetic/literary the loving care and protection〈诗/文〉温暖的关怀和保护：Bruno went home each night to the bosom of his family.
布鲁诺每晚都回到家庭温暖的怀抱中。
1.5
- used to refer to the chest as the seat of emotions胸怀, 内心：
quivering dread was settling in her bosom.
她心存恐惧与不安。
attrib.
- (of a friend) very close or intimate（朋友）亲密的, 知心的：
the two girls had become bosom friends.
这两个女孩变成了知心朋友。
派生词
bosomed
adjective她那几近平胸的身材。
词源
Old English Bōsm, of West Germanic origin; related to Dutch boezem and German Busen.