Source : Webster's Revised Unabridged Dictionary (1913)

Breakage \Break"age\, n.
   1. The act of breaking; a break; a breaking; also, articles
      broken.

   2. An allowance or compensation for things broken
      accidentally, as in transportation or use.

Source : WordNet®

breakage
     n 1: the quantity broken; "the total breakage was huge"
     2: reimbursement for goods damaged while in transit or in use
     3: the act of breaking something; "the breakage was
        unavoidable" [syn: {break}, {breaking}]