pricker

noun7

1. •
   One who pricks.
2. •
   A prickle or thorn.
3. •
   A tool for pricking.

   • The pricker was used to level the fire half-way up the bank and that was that. — 1961
4. •
   A priming wire; a priming needle, used in blasting and gunnery.
5. •
   A small marlinespike used in sailmaking.
6. •
   One who spurs forward; a light-horseman.

   • The prickers, who rode foremost, […] halted. — 1814
7. •
   Any of several American prickly woody vines of the genus Smilax; greenbrier.