artificer

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A skilled worker; a craftsperson.
• noun One that contrives, devises, or constructs something.
• noun A deceptive or devious person.
• noun A military engineer.

from The Century Dictionary.

• noun A maker; a constructor; a skilful or artistic worker; a handicraftsman; a mechanic.
• noun One who contrives or devises; an inventor; especially, an inventor of crafty or fraudulent artifices: as, “artificer of fraud,” Milton, P. L., iv. 121; “artificer of lies,” Dryden; “let you alone, cunning artificer,”
• noun Milit., a soldier-mechanic attached to the artillery and engineer service, whose duty it is to construct and repair military materials.
• noun One who uses artifice; an artful or wily person.

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

• noun An artistic worker; a mechanic or manufacturer; one whose occupation requires skill or knowledge of a particular kind, as a silversmith.
• noun One who makes or contrives; a deviser, inventor, or framer.
• noun obsolete A cunning or artful fellow.
• noun (Mil.) A military mechanic, as a blacksmith, carpenter, etc.; also, one who prepares the shells, fuses, grenades, etc., in a military laboratory.

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

• noun Someone who is skilled in their trade; an artisan.
• noun An inventor.
• noun A member of the military who specializes in manufacturing and repairing weapon systems.
• noun A trickster.
• noun A savant.

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

• noun an enlisted man responsible for the upkeep of small arms and machine guns etc.
• noun someone who is the first to think of or make something
• noun a skilled worker who practices some trade or handicraft