S: (n) bit (the cutting part of a drill; usually pointed and threaded and is replaceable in a brace or bitstock or drill press) "he looked around for the right size bit"
S: (n) shank, waist (the narrow part of the shoe connecting the heel and the wide part of the sole)
S: (n) cannon, shank (lower part of the leg extending from the hock to the fetlock in hoofed mammals)
S: (n) shank (a poor golf stroke in which the heel of the club hits the ball)