stock warrant in WordNet English dictionary

1. a type of security issued by a corporation (usually together with a bond or preferred stock) that gives the holder the right to purchase a certain amount of common stock at a stated price
   "as a sweetener they offered warrants along with the fixed-income securities"
   warrant  stock warrant  stock-purchase warrant 
   
2. a written certificate that gives the holder the right to purchase shares of a stock for a specified price within a specified period of time
   stock warrant