SHOVEL n.
An implement consisting of a broad scoop, or more or less hollow blade, with a handle, used for lifting and throwing earth, coal, grain, or other loose substances. Shovel hat, a broad-brimmed hat, turned up at the sides, and projecting in front like a shovel, - - worn by some clergy of the English Church. [Colloq.] --…
SNAIL n.
edful 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 [protected], . . . as the snail is in his house; therefore they cleped them snails. Vegetius (Trans.).