blade
UK: bleɪd | US: bleɪd
n. the flat cutting edge of a knife, sword, or other tool or weapon
n. a long, narrow leaf of grass or a similar plant
n. the broad, flat part of an oar, propeller, or other implement
The word "blade" originates from Old English blæd, meaning "leaf" or "flat part," which evolved from Proto-Germanic bladaz. Its meaning expanded to include the cutting edge of tools/weapons due to the shared flat, thin shape of leaves and blades. The word is monomorphic (not compound) and cannot be cleanly split into smaller meaningful morphemes in modern English.
The chef sharpened the blade of his knife before slicing the vegetables.
A single blade of grass poked through the cracks in the pavement.
The wind turbine's blades spun rapidly in the strong breeze.
He carefully wiped the blood off the sword's blade.
The hockey player's skate blade glided smoothly across the ice.