Source : Webster's Revised Unabridged Dictionary (1913)

Stud \Stud\, n. [AS. studu a post; akin to Sw. st["o]d a prop,
   Icel. sto? a post, sty?ja to prop, and probably ultimately to
   E. stand; cf. D. stut a prop, G. st["u]tze. See {Stand}.]
   1. A stem; a trunk. [Obs.]

            Seest not this same hawthorn stud?    --Spenser.

   2. (Arch.) An upright scanting, esp. one of the small
      uprights in the framing for lath and plaster partitions,
      and furring, and upon which the laths are nailed.

   3. A kind of nail with a large head, used chiefly for
      ornament; an ornamental knob; a boss.

            A belt of straw and ivy buds, With coral clasps and
            amber studs.                          --Marlowe.

            Crystal and myrrhine cups, embossed with gems And
            studs of pearl.                       --Milton.

   4. An ornamental button of various forms, worn in a shirt
      front, collar, wristband, or the like, not sewed in place,
      but inserted through a buttonhole or eyelet, and
      transferable.

   5. (Mach.)
      (a) A short rod or pin, fixed in and projecting from
          something, and sometimes forming a journal.
      (b) A stud bolt.

   6. An iron brace across the shorter diameter of the link of a
      chain cable.

   {Stud bolt}, a bolt with threads on both ends, to be screwed
      permanently into a fixed part at one end and receive a nut
      upon the other; -- called also {standing bolt}.