The Collaborative International Dictionary of English v.0.48:

oilstove \oilstove\ n.
   A stove that burns oil (such as kerosine) for heating or
   cooking.

   Syn: oil-heater, oil heater, kerosene heater, kerosine
        heater.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

oilstove
    n 1: heater that burns oil (as kerosine) for heating or cooking
         [syn: oil heater, oilstove, kerosene heater,
         kerosine heater]