The (typically sharp-edged) part of a knife, sword, razor, or other tool with which it cuts. • A sword or knife. • Ellipsis of razor blade. • The flat functional end or piece of a propeller, oar, hockey stick, chisel, screwdriver, skate, etc. • The narrow leaf of a grass or cereal. • The thin, flat part of a plant leaf, attached to a stem (petiole). • A flat bone, especially the shoulder blade. • A cut of beef from near the shoulder blade (part of the chuck). • The part of the tongue just behind the tip, used to make laminal consonants. • A piece of prepared, sharp-edged stone, often flint, at least twice as long as it is wide; a long flake of ground-edge stone or knapped vitreous stone. • A throw characterized by a tight parabolic trajectory due to a steep lateral attitude. • The rudder, daggerboard, or centerboard of a vessel. • A bulldozer or surface-grading machine with mechanically adjustable blade that is nominally perpendicular to the forward motion of the vehicle. • A dashing young man. • A homosexual, usually male. • An area of a city which is commonly known for prostitution. • Thin plate, foil. • One of a series of small plates that make up the aperture or the shutter of a camera. • The principal rafters of a roof. • The four large shell plates on the sides, and the five large ones of the middle, of the carapace of the sea turtle, which yield the best tortoise shell. • Ellipsis of blade server. • Synonym of knifeblade. • An exterior product of vectors. (The product may have more than two factors. Also, a scalar counts as a 0-blade, a vector as a 1-blade; an exterior product of k vectors may be called a k-blade.) • The part of a key that is inserted into the lock. • An artificial foot used by amputee athletes, shaped like an upside-down question mark. • A cleat on a shoe, particularly one that is longer and thinner than a stud. • A football boot equipped with blade-type cleats. • The quality of singing with a pure, resonant sound; especially of a countertenor.