n an alloy of iron with small amounts of carbon; widely used in construction; mechanical properties can be varied over a wide range
n a cutting or thrusting weapon that has a long metal blade and a hilt with a hand guard
n knife sharpener consisting of a ridged steel rod
v get ready for something difficult or unpleasant
v cover, plate, or edge with steel
n. 刀组；各种钢（steel的复数）