Webster's Revised Unabridged Dictionary · 1913

Oily

Oily , adjective

1.
Consisting of oil; containing oil; having the nature or qualities of oil; unctuous; oleaginous; as, oily matter or substance. — Bacon
2.
Covered with oil; greasy; hence, resembling oil; as, an oily appearance.
3.
Smoothly subservient; supple; compliant; plausible; insinuating.
This oily rascal. — Shakespeare
His oily compliance in all alterations. — Fuller
Collocations (2)
Oily grain (Botany) , the sesame.
Oily palm , the oil palm.