blade

American  

[bleyd] / bleɪd /

noun

1. the flat cutting part of a sword, knife, etc.

2. a sword, rapier, or the like.

3. a part of a tool or mechanism which is thin and flat with a tapered edge, used for clearing, wiping, scraping, etc..

   the blade of a windshield wiper;

   the blade of a bulldozer.

4. the arm of a propeller or other similar rotary mechanism, as an electric fan or turbine.

5. Botany.

   1. the leaf of a plant, especially of a grass or cereal.

   2. the broad part of a leaf, as distinguished from the stalk or petiole.

6. the metal part of an ice skate that comes into contact with the ice.

7. a thin, flat part of something, as of an oar or a bone.

   shoulder blade.

8. a prosthetic lower leg, primarily for athletes, ending in a curved strip of flexible carbon fiber that acts as an ankle and foot, allowing running and jumping.

9. Phonetics.

   1. the foremost and most readily flexible portion of the tongue, including the tip and implying the upper and lower surfaces and edges.

   2. the upper surface of the tongue directly behind the tip, lying beneath the alveolar ridge when the tongue is in a resting position.

10. the elongated hind part of a fowl's single comb.

11. a swordsman.

12. Archaic. a dashing, swaggering, or jaunty young man.

    a gay blade from the nearby city.

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blade British  

/ bleɪd /

noun

1. the part of a sharp weapon, tool, etc, that forms the cutting edge

2. (plural) hand shears used for shearing sheep

3. the thin flattish part of various tools, implements, etc, as of a propeller, turbine, etc

4. the flattened expanded part of a leaf, sepal, or petal

5. the long narrow leaf of a grass or related plant

6. the striking surface of a bat, club, stick, or oar

7. the metal runner on an ice skate

8. archaeol a long thin flake of flint, possibly used as a tool

9. the upper part of the tongue lying directly behind the tip

10. archaic a dashing or swaggering young man

11. short for shoulder blade

12. a poetic word for a sword swordsman

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blade Scientific  

/ blād /

1. 1. The expanded part of a leaf or petal.

   2. The leaf of grasses and similar plants.

2. A stone tool consisting of a slender, sharp-edged, unserrated flake that is at least twice as long as it is wide. Blade tools were developed late in the stone tool tradition, after core and flake tools, and were probably used especially as knives.

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Other Word Forms

• bladed adjective
• bladeless adjective
• multiblade noun
• unblade verb (used with object)

Etymology

Origin of blade

First recorded before 1000; Middle English blad(e), blaid “leaf, blade (of a plant or sword)”; Old English blæd “blade (of grass or an oar)”; cognate with Dutch blad, Old Norse blath, German Blatt; akin to blow ³

Explanation

A blade is a very sharp metal edge of a tool. A good cooking knife should have its blade sharpened regularly. Knives, swords, and razors have blades, metal edges so fine and thin that they can cut and slice. The shoulder bone is sometimes called a "shoulder blade," and a piece of grass is also a blade. In fact, the original meaning of the Old English blæd was "leaf," and then "something resembling a leaf." In the 14th century, the word was applied to swords, based on their shape — similar to a leaf or blade of grass.

Example Sentences

It represents the second generation of what BYD calls its blade battery, a lighter product that has a blade-like shape and takes up less space than other batteries.

From The Wall Street Journal • Mar. 5, 2026

She points to the orange fence on the right hand picture which looks like a handle and the entire white canvas of the left hand painting which resembles the blade.

From BBC • Feb. 24, 2026

Researchers believe the crest was brightly colored during the dinosaur's lifetime and arched upward like a curved blade, likely serving as a dramatic display structure.

From Science Daily • Feb. 23, 2026

It looked like the silvery blade of a knife.

From Los Angeles Times • Jan. 15, 2026

Fa’s knife was beautiful and deadly, with a blade of banded blue slate shaped like a willow leaf, and a haft of red deer antler that was bound with elk sinew for a better grip.

From "Wolf Brother" by Michelle Paver

Related Words

• knife
• sword