D defs.my
Entry 3 senses Webster, 1913

Oily

/oil'-ē/ · Oil·y · IPA /ˈɔɪli/
01 a. Consisting of oil; containing oil; having the nature or qualities of oil; unctuous; oleaginous; as, oily matter or substance.
  1. 1.
    Consisting of oil; containing oil; having the nature or qualities of oil; unctuous; oleaginous; as, oily matter or substance.
  2. 2.
    Covered with oil; greasy; hence, resembling oil; as, an oily appearance.
  3. 3.
    Smoothly subservient; supple; compliant; plausible; insinuating.
    “His oily compliance in all alterations.” Fuller.
Phrases & compounds
Oily grain — the sesame.
Oily palm — the oil palm.