*toxical*

{ } a. [ L. toxicum poison, originally, a poison in which arrows were dipped, Gr. toxiko`n (sc. &unr_;) poison for smearing arrows with, fr. toxiko`s of or for the bow, from to`xon bow, arrow. Cf. Intoxicate. ] Of or pertaining to poison; poisonous; as, toxic medicines. [ 1913 Webster ]