bos ‧ om /ˈbʊz ə m/ BrE AmE noun
[ Language: Old English ; Origin: bosm ]
1 . [countable usually singular] written the front part of a woman’s chest:
She cradled the child to her bosom.
2 . [countable usually plural] a woman’s breast
3 . the bosom of the family/the Church etc the situation where you feel safe because you are with people who love and protect you
4 . [singular] literary a word meaning someone’s feelings and emotions, used especially when these are bad or unpleasant:
Drury harboured bitterness in his bosom.
5 . bosom friend/buddy/pal literary a very close friend