Definitions of blade:

• noun:   the flat part of a tool or weapon that (usually) has a cutting edge
• noun:   flat surface that rotates and pushes against air or water
• noun:   the part of the skate that slides on the ice
• noun:   a broad flat body part (as of the shoulder or tongue)
• noun:   a cut of beef from the shoulder blade
• noun:   something long and thin resembling a blade of grass

  Example: "A blade of lint on his suit"

• noun:   a dashing young man

  Example: "Gay young blades bragged of their amorous adventures"

• noun:   especially a leaf of grass or the broad portion of a leaf as distinct from the petiole
• noun:   a cutting or thrusting weapon with a long blade
• name:  A surname (rare: 1 in 100000 families; popularity rank in the U.S.: #15266)