lubricant
lu.bri.cant \'lu:-bri-k*nt\ n 1: a substance capable of reducing friction, heat, and wear when introduced as a film between solid surfaces 2: something that lessens or prevents friction or difficulty - lubricant aj
Webster's English Dictionarylu.bri.cant \'lu:-bri-k*nt\ n 1: a substance capable of reducing friction, heat, and wear when introduced as a film between solid surfaces 2: something that lessens or prevents friction or difficulty - lubricant aj