Chaser

Definition:

(n.) One who or that which chases; a pursuer; a driver; a hunter.
(n.) Same as Chase gun, esp. in terms bow chaser and stern chaser. See under Bow, Stern.
(n.) One who chases or engraves. See 5th Chase, and Enchase.
(n.) A tool with several points, used for cutting or finishing screw threads, either external or internal, on work revolving in a lathe.

Compare chaser with other words:

chafer vs. chaser