'Bosoms' in the Bible

and they prostituted [themselves] in Egypt in their childhood; they were prostituting [themselves] there, [and] their breasts were fondled, and there they caressed the bosoms of their virginity.

And her whorings from [the time of] Egypt she [did] not abandon, for they slept with her in her childhood, and they caressed the bosoms of her virginity, and they poured out their fornication on her.