Hornstone

(Min.) A variety of quartz resembling flint, but more brittle. Horn'town, in Virginia , a post-village of Accomac co., about 26 m. N.E. of Accomac Court-House. Horn'-work, n. ( Fortif .) A work having one front only, thrown out beyond the glacis of a fortre , with a view - 1. To strengthen a weak salient in the general outline; 2. To occupy a plateau in advance of the place, or to protect buildings, the including of which in the original enceinte would have extended it to an inconvenient degree; 3. To occupy Σ A a tongue of land protected on its sides; 4. To bar a defile; 5. To cover the head of a bridge; 6. To occupy rising ground, the po e ion of which would render the enemy more than nece arily dangerous. The front of a horu-work consists of two dem i-bastions connected by a curtain, and usually defended in front, as in the A , HORN-WORK, COVERING fortre itself, by tenaille, ravelin, and covert-way. The B Fig . 1313. A BASTION B. flanks, protected by ditches, run straight upon the ravelin, bastion, or curtain of the main defences, so that the ditch may be swept by the fire of the latter. The flanks should not be too long for easy musketry range. Horn'wort, n. ( Bot . ) See CERATOPHYLLACEAE. Horn'-wrack, ( -rack ,) n. A coralline. Horn'y, a. Consisting of horn or horns.-Made of horn, or some substance resembling horn; as, a horny beak. "Rough are her ears, and broad her horny feet." -Dryden. -Hard; callous; indurate. Tyrrheus... clenched a hatchet in his horny Ast."-Dryden.