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nakes of the genus Dendrophis. They live chiefly among the branches of trees, and are not venomous. -- Tree sorrel (Bot.), a kind of sorrel (Rumex Lunaria) which attains the stature of a small tree, and bears greenish flowers. It is found in the Canary Islands and Teneriffe. -- Tree sparrow (Zoöl.) any one of several…

A venomous two-winged African fly (Glossina morsitans) whose bite is very poisonous, and even fatal, to horses and cattle, but harmless to men. It renders extensive districts in which it abounds uninhabitable during certain seasons of the year. [Written also tzetze, and tsetze.]

pulsive; deformed. The ugly view of his deformed crimes. Spenser. Like the toad, ugly and venomous. Shak. O, I have passed a miserable night, So full of ugly sights, of ghastly dreams. Shak.

A large East Indian nocturnal tree snake (Dipsas dendrophila). It is not venomous.

Venomous. [Obs.]

Poison; venom. [Obs.] Sir T. Browne.

Poisonous; venomous. [Obs.]

A toxic substance contained in the venom of poisonous snakes; also, a (supposedly identical) toxic substance obtained by the cleavage of an albumose.

rpion, esp. a large Mexican species (Thelyphonus giganteus) popularly supposed to be very venomous; -- from the odor that it emits when alarmed.

Any one of numerous species of Old World venomous makes belonging to Vipera, Clotho, Daboia, and other genera of the family Viperidæ. There came a viper out of the heat, and fastened on his hand. Acts xxviii. 3.

f or pertaining to a viper or vipers; resembling a viper. Viperine snake. (Zoöl.) (a) Any venomous snake of the family Viperidæ. (b) A harmless snake resembling a viper in form or color, esp. Tropidonotus viperinus, a small European species which resembles the viper in color.

Having the qualities of a viper; malignant; venomous; as, a viperous tongue. "This viperous slander." Shak. -- Vi"per*ous*ly, adv.

The quality or state of being virulent or venomous; poisonousness; malignancy.

Extremely poisonous or venomous; very active in doing injury. A contagious disorder rendered more virulent by uncleanness. Sir W. Scott.

To go; to move forward. [Obs.] When might is joined unto cruelty, Alas, too deep will the venom wade. Chaucer. Forbear, and wade no further in this speech. Old Play.

A venomous North American snake (Ancistrodon piscivorus) allied to the rattlesnake but destitute of a rattle. It lives in or about pools and ponds, and feeds largely of fishes. Called also water snake, water adder, water viper.

h American tree snake (Philodryas viridissimus) having a long and slender body. It is not venomous. Called also emerald whip snake. (b) The coachwhip snake.

(Acts xxviii. 3, 4). 'T is slander, Whose edge is sharper than the sword, whose tongue Outvenoms all the worms of Nile. Shak. When Cerberus perceived us, the great worm, His mouth he opened and displayed his tusks. Longfellow.

A large, venomous, two-winged fly, native of Abyssinia. It is allied to the tsetse fly, and, like the latter, is destructive to cattle.