The Collaborative International Dictionary
Tilley \Til"ley\, n., or Tilley seed \Til"ley seed`\ (Bot.) The seeds of a small tree ( Croton Pavana) common in the Malay Archipelago. These seeds furnish croton oil, like those of Croton Tiglium. [Written also tilly.]
Tiglic \Tig"lic\, a. (Chem.) Of, pertaining to, or designating, an acid, C4H7CO2H (called also methyl crotonic acid), homologous with crotonic acid, and obtained from croton oil (from Croton Tiglium) as a white crystalline substance.
Croton \Cro"ton\ (kr?"t?n), n. [Gr. ????, prop., a tick, which the seed of the croton resembles.] (Bot.) A genus of euphorbiaceous plants belonging to tropical countries.
Croton oil (Med.), a viscid, acrid, brownish yellow oil obtained from the seeds of Croton Tiglium, a small tree of the East Indies. It is a most powerful drastic cathartic, and is used externally as a pustulant.
Wikipedia
Croton tiglium, known as Purging Croton, is a plant species in the Euphorbiaceae family. C. tiglium is also called Jamaal Gota in Hindi and Urdu.