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Having the spines of the dorsal fin unsymmetrical, or thickened alternately on the right and left sides.

Having the dorsal fin spines symmetrical, and in the same line; -- said of certain fishes.

Having numerous spines, as certain fishes.

The evergreen thorn (Cratægus Pyracantha), a shrub native of Europe.

hich is used as a substitute for gum arabic in medicine and the arts. Called also gum tragacanth.

Gum tragacanth. Brande & C.

rous species, two of which are called, in English, milk vetch and licorice vetch. Gum tragacanth is obtained from different oriental species, particularly the A. gummifer and A. verus.

A constituent part of a species of gum from Bassora, as also of gum tragacanth and some gum resins. It is one of the amyloses. Ure.

e Malthe vespertilio of the Atlantic coast. (b) The flying gurnard of the Atlantic (Cephalacanthus spinarella). (c) The California batfish or sting ray (Myliobatis Californicus.)

See Acanthus, n., 1.

A fish of the genus Priacanthus, remarkable for the large size of the eye.

Bear's-breech, or Acanthus.

al different fishes, in allusion to their slippery coating of mucus, as the Stromateus triacanthus of the Atlantic coast, the Epinephelus punctatus of the southern coast, the rock eel, and the kelpfish of New Zealand.

A gummy mucilaginous substance; -- called also bassorin, tragacanthin, etc.

ralian snake of the family Elapidæ, of several species, as the Hoplocephalus superbus and Acanthopis antarctica. -- Death bell, a bell that announces a death. The death bell thrice was heard to ring. Mickle. -- Death candle, a light like that of a candle, viewed by the superstitious as presaging death. -- Death damp,…

octor'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.

under 9th Chop. -- Dollar fish (Zoöl.), a fish of the United States coast (Stromateus triacanthus), having a flat, roundish form and a bright silvery luster; -- called also butterfish, and Lafayette. See Butterfish. -- Trade dollar, a silver coin formerly made at the United States mint, intended for export, and not l…

A mucilage obtained from, or containing, gun tragacanth.

Any plectognath fish of the genera Monacanthus, Alutera, balistes, and allied genera; -- so called on account of the roughly granulated skin, which is sometimes used in place of sandpaper.

s or plants that hardens when it exudes, but is soluble in water; as, gum arabic; gum tragacanth; the gum of the cherry tree. Also, with less propriety, exudations that are not soluble in water; as, gum copal and gum sandarac, which are really resins.