[n] the flat part of a tool or weapon that (usually) has a cutting edge
[n] flat surface that rotates and pushes against air or water
[n] the part of the skate that slides on the ice
[n] a cutting or thrusting weapon with a long blade
[n] a broad flat body part (as of the shoulder or tongue)
[n] a cut of beef from the shoulder blade
[n] something long and thin resembling a blade of grass; "a blade of lint on his suit"
[n] a dashing young man; "gay young blades bragged of their amorous adventures"
[n] especially a leaf of grass or the broad portion of a leaf as distinct from the petiole