n. A European tree of the poplar family, Populus tremula.n. A very venomous serpent of Egypt, celebrated in connection with the story of Cleopatra's suicide.n. The common viper or adder of Europe, a feebly poisonous serpent, formerly named Vipera communis, now Pelias berus, of the family Viperidæ. See cut under adder.n. A name of sundry other poisonous serpents.n. Aspic and aspick are obsolete or poetic forms.