''Initialism of'' Confined to Barracks, a punishment
(init of) a defensive position
(init of) a line marking the center on the back side of a piece of clothing
1974, (w), ''The Book of Ebenezer Le Page'', New York 2007, p. 133:
- ‘Twenty days C.B.,’ said one. ‘Twenty years, more likely,’ said another.
(abbreviation of): a priest's darling