motor oil

from WordNet (r) 3.0 (2006)

motor oil
    n 1: oil used to lubricate the moving parts of a motor

from Moby Thesaurus II by Grady Ward, 1.0

19 Moby Thesaurus words for "motor oil":
      avgas, crude, crude oil, ethyl, ethyl gas, fossil oil, gas,
      gasoline, high-octane gas, high-test, kerosene, lead-free gas,
      low-lead gas, paraffin, petrol, petroleum, premium gas, regular,
      rock oil