rebate in WordNet English dictionary

1. a refund of some fraction of the amount paid
   rebate  discount 
   
2. a rectangular groove made to hold two pieces together
   rabbet  rebate 
   

1. cut a rebate in (timber or stone)
   rebate 
   
2. join with a rebate
   "rebate the pieces of timber and stone"
   rebate 
   
3. give a reduction in the price during a sale
   "The store is rebating refrigerators this week"
   rebate