E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Bosom Friend (A).
A very dear friend. Nathan says, “It lay in his bosom, and was unto him as a daughter.” (2 Sam. xii. 3.) Bosom friend, amie du cœur. St. John is represented in the New Testament as the “bosom friend” of Jesus.
