"grease" in the noun sense
1. grease, lubricating oil
a thick fatty oil (especially one used to lubricate machinery)
2. dirt, filth, grime, soil, stain, grease, grunge
the state of being covered with unclean things
"grease" in the verb sense
1. grease
lubricate with grease
"grease the wheels"
Source: WordNet® (An amazing lexical database of English)
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