ERROR - COULDN'T CALCULATE THE ANSWER.
Don't worry, I've picked a good definition out of the web for you:
any of several white or yellowish greasy substances, forming the chiefpart of adipose tissue of animals and also occurring in plants, thatwhen pure are colorless, odorless, and tasteless and are either solid orliquid esters of glycerol with fatty acids; fats are insoluble in water orcold alcohol but soluble in ether, chloroform, or benzene: used in themanufacture of soap, paints, and other protective coatings and incooking.
-- http://dictionary.reference.com/
