(1):

(a.) Noxious; mischievous; malignant; spiteful; as, a venomous progeny; a venomous writer.

(2):

(a.) Full of venom; noxious to animal life; poisonous; as, the bite of a serpent may be venomous.

(3):

(a.) Having a poison gland or glands for the secretion of venom, as certain serpents and insects.