blade in Finnish

The (typically sharp-edged) part of a knife, sword, razor, or other tool with which it cuts.

The flat functional end or piece of a propeller, oar, hockey stick, chisel, screwdriver, skate, etc.

(biology) 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.

(biology) 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.

(mathematics) 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.)

(mathematics) 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.)