re·bate /ˈriˌbet, rɪˈ/
 減少,折扣(vt.)減少,打折扣(vi.)給回扣,打折扣
 Re·bate v. t.
 1. To beat to obtuseness; to deprive of keenness; to blunt; to turn back the point of, as a lance used for exercise.
    But doth rebate and blunt his natural edge.   --Shak.
 2. To deduct from; to make a discount from, as interest due, or customs duties.
 Rebated cross, a cross which has the extremities of the arms bent back at right angles, as in the fylfot.
 Re·bate, v. i. To abate; to withdraw. [Obs.]
 Re·bate, n.
 1. Diminution.
 2. Com. Deduction; abatement; as, a rebate of interest for immediate payment; a rebate of importation duties.
 Re·bate, n.
 1. Arch. A rectangular longitudinal recess or groove, cut in the corner or edge of any body; a rabbet. See Rabbet.
 2. A piece of wood hafted into a long stick, and serving to beat out mortar.
 3. An iron tool sharpened something like a chisel, and used for dressing and polishing wood.
 4.  A kind of hard freestone used in making pavements. [R.]
 Re·bate, v. t. To cut a rebate in. See Rabbet, v.
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 rebate
      n 1: a refund of some fraction of the amount paid [syn: discount]
      2: a rectangular groove made to hold two pieces together [syn:
         rabbet]
      v 1: give a reduction in the price during a sale; "The store is
           rebating refrigerators this week"
      2: cut a rebate in (timber or stone)
      3: join with a rebate; "rebate the pieces of timber and stone"