chaser

from The Century Dictionary.

• noun One who chases; a pursuer; a hunter; a driver.
• noun Nautical: A vessel which pursues another, A chase-gun; a gun on a vessel mounted especially for service when in chase or being chased: called a bow-chaser when pointed from the bow, and a stern-chaser when from the stern.
• noun A short strap used to keep the curtain of a carriage in place when it is rolled up.
• noun One who chases or enchases; an enchaser.
• noun A hand-tool of steel used for cutting or finishing the threads of screws; the tool used as the cutting instrument in a chasing-lathe.
• noun The sip of water or mild drink with which tipplers ‘chase’ or wash down their dram of spirits.
• noun Same as edge-runner mill (which see, under mill). Also called chaser mill.

from the GNU version of the Collaborative International Dictionary of English.

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

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun logging, obsolete Someone that follows logs out of the forest in order to signal a yarder engineer to stop them if they become fouled - also called a frogger.
• noun logging one who unhooks chokers from the logs at the landing.
• noun One of a series of adjacent light bulbs that cycle on and off to give the illusion of movement.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a person who is pursuing and trying to overtake or capture
• noun a drink to follow immediately after another drink