- the leaf of a plant, esp. of grass
- the flat, expanded part of a leaf; lamina
- a broad, flat section or surface, as of an oar, propeller arm, or rotary vane
- the propeller arm or rotary vane itself
- a flat bone: the shoulder blade
- the cutting part of a tool, instrument, or weapon
- any flat or wedge-shaped device or part for cutting, scraping, pushing, clearing, etc.
- the metal runner of an ice skate
- a sword
- a swordsman
- Old-fashioned a dashing young manusually in the phrase gay blade
- Slang a knife, often, specif., a switchblade knife, intended or used as a weapon
- Phonet. the flat part of the tongue, behind the tip
Origin of bladeMiddle English blad from Old English blæd, a leaf from Indo-European an unverified form bhl?-, variant, variety of base an unverified form bhel-, to swell, sprout: see bloom
- The flat cutting part of a sharpened weapon or tool.
- a. A sword.b. A swordsman.
- Archaeology A slender, sharp-edged flake that is at least twice as long as it is wide.
- A dashing youth.
- a. A flat thin part or section, especially one that makes contact to perform a desired action: the blade of an oar; the blade of a hockey stick.b. An arm of a rotating mechanism: the blade of a propeller; the blade of a food processor.c. A long, thin, often curved piece, as of metal or rubber, used for plowing, clearing, or wiping.
- The metal runner of an ice skate.
- A wide flat bone or bony part.
- The flat upper surface of the tongue just behind the tip.
- Botany a. The expanded part of a leaf or petal.b. The leaf of grasses or similar plants.
intransitive verbblad·ed, blad·ing, blades
Origin of bladeMiddle English from Old English blæd ; see bhel-3 in Indo-European roots.
- The sharp cutting edge of a knife, chisel, or other tool, a razor blade.
- The flat functional end of a propeller, oar, hockey stick, screwdriver, skate, etc.
- The narrow leaf of a grass or cereal.
- (botany) The thin, flat part of a plant leaf, attached to a stem (petiole). The lamina.
- A flat bone, especially the shoulder blade.
- A cut of beef from near the shoulder blade (part of the chuck).
- The flat part of the tongue.
- (poetic) A sword or knife.
- (archaeology) 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.
- (ultimate frisbee) A throw characterized by a tight parabolic trajectory due to a steep lateral attitude.
- (sailing) 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.
- (dated) A dashing young man.
- (slang, chiefly US) A homosexual, usually male.
- Thin plate, foil.
- (architecture, in the plural) 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.
- Airfoil in windmills and windturbines.
(third-person singular simple present blades, present participle blading, simple past and past participle bladed)
- (informal) To skate on rollerblades.
- To furnish with a blade.
- (intransitive, poetic) To put forth or have a blade.
From Middle English, from Old English blæd (“leaf”), from Proto-Germanic *bladą (compare West Frisian bled, Dutch blad, German Blatt, Danish blad) from Proto-Indo-European *bʰlh̥₃oto (compare Irish bláth (“flower”), Tocharian A pält, Tocharian B pilta (“leaf”), Albanian fletë (“leaf”)), from *bʰleh₃- (“to thrive, bloom”). Similar usage in Sägeblatt (“saw leaf”), the German term for a saw blade. More at blow.
blade - Computer Definition
One component in a system that is designed to accept some number of components (blades). Blades can be individual servers or clients that plug into a single cabinet or individual port cards that add connectivity to a switch. A blade is typically a hot swappable hardware device, but a software architecture could use the blade terminology as well. See blade server and blade PC.