oily Copy link Outline 1. ŏleāceus (like oil)2. ŏleōsus (full of oil, tasting of it) • oily: 1. ŏleāceus (like oil): an o. fluid, liquor o., Plin. 35, 15, 51. 2. ŏleōsus (full of oil, tasting of it): Plin. 28, 9, 35. To have an o. taste, oleum sapere: v. to taste (intrans.).