Webster’s Revised Unabridged Dictionary · 1913
Pricker
Prick′er (·ẽr), n. 1. One who, or that which, pricks; a pointed instrument; a sharp point; a prickle.
2. One who spurs forward; a light horseman.
The prickers, who rode foremost, . . . halted. Sir W. Scott.
3. A priming wire; a priming needle, — used in blasting and gunnery. Knight.
4. (Naut.) A small marline spike having generally a wooden handle, — used in sailmaking. R. H. Dana, Ir.