bac

from The Collaborative International Dictionary of English v.0.48
Bac \Bac\, n. [F. See {Back} a vat.]
   1. A broad, flat-bottomed ferryboat, usually worked by a
      rope.
      [1913 Webster]

   2. A vat or cistern. See 1st {Back}.
      [1913 Webster]
    
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
BAC
       Basic Air Control (RFID)
       
    

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