SCULPTURE v.
with the chisel on, in, or from, wood, stone, or metal; to carve; to engrave. Sculptured tortoise (Zoöl.), a common North American wood tortoise (Glyptemys insculpta). The shell is marked with strong grooving and ridges which resemble sculptured figures.
SNAIL n.
A tortoise; in ancient warfare, a movable roof or shed to protect besiegers; a testudo. [Obs.] They had also all manner of gynes [engines] . . . that needful is [in] taking or sieging of castle or of city, as snails, that was naught else but hollow pavises and targets, under the which men, when they fought, were heled…