Boyd’s Bible Dictionary:
(buzum). To lean on, implied great intimacy (John 13:23). Figuratively, Paradise (Luke 16:23; 23:43).
Concise Bible Dictionary:
Used symbolically for the seat of deep affection. John speaks of the Lord Jesus as the only begotten Son “in the bosom of the Father” (John 1:18). The tender and sacred relationship which husband and wife have to each other is also called the “bosom” (Deut. 28:54, 56). This to an Israelite would give force to the description of Lazarus being carried into ABRAHAM’S Bosom (Luke 16:22-23). By means of a loose garment and a girdle, many things are constantly carried by Orientals in the bosom, even such as a lamb (Isa. 40:11: Compare Luke 6:38).
Strong’s Dictionary of Hebrew Words:
Meaning:
by contraction from 2245; properly, a cherisher, i.e. the bosom