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p.b.

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  1. Baseball. passed ball; passed balls.

P.B.1

  1. British Pharmacopoeia.

Origin of P.B.1

From the Latin word Pharmacopoeia Britannica

P.B.2

  1. Prayer Book.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018