SELF-HARDENING a.
ating, or pert. to, any of various steels that harden when heated to above a red heat and cooled in air, usually in a blast of cold air with moderate rapidity, without quenching. Such steels are alloys of iron and carbon with manganese, tungsten and manganese, chromium, molybdenum and manganese, etc. They are chiefly u…
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.] --…