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The shorter branches of some species terminate in long spines or thorns. See Rhamnus. Sea buckthorn, a plant of the genus Hippophaë.

The buckthorn (Rhamnus Purshiana) of the Pacific coast of the United States, which yields cascara sagrada.

An ornamental evergreen shrub (Rhamnus alaternus) belonging to the buckthorns.

sually shrubs or small trees. Black alder. (a) A European shrub (Rhamnus frangula); Alder buckthorn. (b) An American species of holly (Ilex verticillata), bearing red berries.

Holy bark; the bark of the California buckthorn (Rhamnus Purshianus), used as a mild cathartic or laxative.

Very; with a tendency to darkness of color. The deeply red juice of buckthorn berries. Boyle.

An orange-red crystalline substance, C15H10O5, obtained from the buckthorn, rhubarb, etc., and regarded as a derivative of anthraquinone; -- so called from a species of rhubarb (Rheum emodei).

Pertaining to, or drived from, frangulin, or a species (Rhamnus Frangula) of the buckthorn. Frangulinic acid (Chem.), a yellow crystalline substance, resembling alizarin, and obtained by the decomposition of frangulin.

ine dyestuff, regarded as a glucoside, extracted from a species (Rhamnus Frangula) of the buckthorn; -- called also rhamnoxanthin.

mmon kidney bean (Phaseolus vulgaris). -- French berry (Bot.), the berry of a species of buckthorn (Rhamnus catharticus), which affords a saffron, green or purple pigment. -- French casement (Arch.) See French window, under Window. -- French chalk (Min.), a variety of granular talc; -- used for drawing lines on clot…

ersians, or to their language. Persian berry, the fruit of Rhamnus infectorius, a kind of buckthorn, used for dyeing yellow, and imported chiefly from Trebizond. -- Persian cat. (Zoöl.) Same as Angora cat, under Angora. -- Persian columns (Arch.), columns of which the shaft represents a Persian slave; -- called also…

or pertaining to a natural order of shrubs and trees (Rhamnaceæ, or Rhamneæ) of which the buckthorn (Rhamnus) is the type. It includes also the New Jersey tea, the supple-jack, and one of the plants called lotus (Zizyphus).

A genus of shrubs and small trees; buckthorn. The California Rhamnus Purchianus and the European R. catharticus are used in medicine. The latter is used for hedges.

One of the berries or drupes of the European buckthorn; also, the buckthorn itself.

The red wood of a kind of buckthorn, used in Russia for dyeing leather (Rhamnus Dahuricus). False sandalwood, the fragrant wood of several trees not of the genus Santalum, as Ximenia Americana, Myoporum tenuifolium of Tahiti. -- Red sandalwood, a heavy, dark red dyewood, being the heartwood of two leguminous trees of…

green pigment prepared from the juice of the ripe berries of the Rhamnus catharticus, or buckthorn. It is used especially by water-color artists. -- Sap rot, the dry rot. See under Dry. -- Sap sucker (Zoöl.), any one of several species of small American woodpeckers of the genus Sphyrapicus, especially the yellow-bel…

Cascara buckthorn.