Noah Webster's New International Dictionary of the English Language

1. (superl.) Composed of, or characterized by, grease; oily; unctuous; as, a greasy dish.

2. (superl.) Smeared or defiled with grease.

3. (superl.) Like grease or oil; smooth; seemingly unctuous to the touch, as is mineral soapstone.

4. (superl.) Fat of body; bulky.

5. (superl.) Gross; indelicate; indecent.

6. (superl.) Affected with the disease called grease; as, the heels of a horse. See Grease, n., 2.