Definition of "Oily" :

adjective: smeared or soiled with grease or oil

"Get rid of rubbish and oily rags."

adjective: containing an unusual amount of grease or oil

"Oily fried potatoes."

adjective: coated or covered with oil

"Oily puddles in the streets."

adjective: unpleasantly and excessively suave or ingratiating in manner or speech

"An oily sycophantic press agent."