vaseline
noun
°Petroleum jelly (now sold by Unilever) under the trade name Vaseline.
"Hearts of putty, hearts of vaseline" (Aldous Huxley, Brief Candles, 1930)
°Any petroleum jelly or similar lubricant.
"A Russian vaseline has been lately added to the many kinds of vaseline found in ..." (Journal of the Society of Chemical Industry, 1882)
verb
°To lubricate with vaseline.