Sentence:  it was in the garage that Alec worked, ... doing mysterious <WSD>greasy</WSD> things. Grease blackened his hairy legs; grease had turned his white canvas shoes black; grease blackened his hands even beyond the wrist; grease made his short working trousers black and stiff. Yet he had the gift, which Mr Biswas admired, of being able to hold a cigarette between <WSD>greasy</WSD> fingers and <WSD>greasy</WSD> lips without staining it. 
Meaning of the word marked with <WSD> tags:  Having a slippery surface; having a surface covered with grease.