Available Definitions:
1) superl. - Consisting of oil; containing oil; having the nature or qualities of oil; unctuous; oleaginous; as, oily matter or substance.
2) superl. - Covered with oil; greasy; hence, resembling oil; as, an oily appearance.
3) superl. - Smoothly subservient; supple; compliant; plausible; insinuating.