Blade
/bleɪd/
noun
The sharp cutting edge of a knife, chisel, or other tool, a razor blade/sword.
The flat functional end of a propeller, oar, hockey stick, screwdriver, skate, etc.
The narrow leaf of a grass or cereal.
verb
To skate on rollerblades.
“Want to go blading with me later in the park?”
To furnish with a blade.
To put forth or have a blade.
noun
A kind of piton used in thin cracks.