1N-COUNT (女子的)乳房 A woman's breasts are sometimes referred to as her bosom or her bosoms. (女子的)乳房 [old-fashioned]
...a large young mother with a baby resting against her ample bosom.
让怀中婴儿靠在她丰满胸部上的身材高大的年轻母亲
2N-SING [theNOUNof n]怀抱;关怀 If you are in the bosom of your family or of a community, you are among people who love, accept, and protect you. 怀抱;关怀 [literary]
Joan was delighted to welcome her boyfriend into the bosom of her large, close-knit family.
琼十分高兴地欢迎她的男朋友加入她亲密无间的大家庭。
3ADJ [ADJ n](朋友)知心的,亲密的 A bosom friend is a friend who you know very well and like very much indeed. (朋友)知心的,亲密的
4PHRASE [PHRASE after verb]接纳;关怀;关爱 If you take someone or something to your bosom, you accept them and treat or regard them with great affection. 接纳;关怀;关爱 [literary]