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.

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 Til·ley n., or 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.]

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 Cro·ton n.  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.

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 Croton tiglium
      n : tropical Asiatic shrub; source of croton oil [syn: croton]