/'bʊzəm; `buzəm/ n
1 [C] person's chest, esp a woman's breasts （人的）胸部; （尤指女子的）乳房
*hold sb to one's bosom 把某人搂在自己的怀里
* She has a large bosom. 她的乳房很大.
2 [C] part of a dress covering the bosom （衣服的）胸部.
3 [sing] the ~ of sth loving care and protection of sth 对某事物的关怀和保护
*live in the bosom of one's family 在家庭的关怀中生活
* welcomed into the bosom of the Church 欢迎投入教会的怀抱.

n
[Language: Old English;Origin: bosm]
[C usually singular]written
the front part of a woman's chest
　She cradled the child to her bosom.
[C usually plural]
a woman's breast
the bosom of the family/the Church etc
the situation where you feel safe because you are with people who love and protect you
[singular]literary
a word meaning someone's feelings and emotions, used especially when these are bad or unpleasant
　Drury harboured bitterness in his bosom.
bosom friend/buddy/pal
literary a very close friend