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A genus of plants (Rumex), some species of which are well-known weeds which have a long taproot and are difficult of extermination.

-- Doctor's stuff, physic, medicine. G. Eliot. -- Doctor fish (Zoöl.), any fish of the genus Acanthurus; the surgeon fish; -- so called from a sharp lancetlike spine on each side of the tail. Also called barber fish. See Surgeon fish.

A plant of the genus Cuscuta. It is a leafless parasitical vine with yellowish threadlike stems. It attaches itself to some other plant, as to flax, goldenrod, etc., and decaying at the root. is nourished by the plant that supports it.

A quadruped of the genus Canis, esp. the domestic dog (C. familiaris).

Having a face resembling that of a dog. Dog-faced baboon (Zoöl.), any baboon of the genus Cynocephalus. See Drill.

The Arctic or blue fox; -- a name also applied to species of the genus Cynalopex.

A small genus of perennial herbaceous plants, with poisonous milky juice, bearing slender pods pods in pairs.

a dog. See Calcite. -- Dogtooth violet (Bot.), a small, bulbous herb of the Lily family (genus Erythronium). It has two shining flat leaves and commonly one large flower. [Written also dog's-tooth violet.]

The Cornus, a genus of large shrubs or small trees, the wood of which is exceedingly hard, and serviceable for many purposes.

A genus of freeswimming oceanic tunicates, allied to Salpa, and having alternate generations.

A genus of large univalve mollusks, including the partridge shell and tun shells.

A cetacean of the genus Delphinus and allied genera (esp. D. delphis); the true dolphin.

A large, oceanic fish of the genus Coryphæna.

A genus of nudibranchiate mollusks having a wreath of branchiæ on the back.

A small European rodent of the genus Myoxus, of several species. They live in trees and feed on nuts, acorns, etc.; -- so called because they are usually torpid in winter.

A genus of plant-eating beetles, including the potato beetle. See Potato beetle.

A pigeon of the genus Columba and various related genera. The species are numerous.

A genus of liliaceous plants with woody stems and funnel-shaped flowers.

A genus of lizards. See Dragon, 6.

A small arboreal lizard of the genus Draco, of several species, found in the East Indies and Southern Asia. Five or six of the hind ribs, on each side, are prolonged and covered with weblike skin, forming a sort of wing. These prolongations aid them in making long leaps from tree to tree. Called also flying lizard.…