Business, Manufacturing, Sewing, TextilesAbbreviation, Initialism Initialism of center back, a line marking the center on the back side of a piece of clothing.
‘Twenty days C.B.,’ said one. ‘Twenty years, more likely,’ said another.1974, GB Edwards, The Book of Ebenezer Le Page, New York, published 2007, page 133:
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Abbreviation, Initialism Initialism of chemical and biological.