from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. One competent in many endeavors, especially one who excels in none of them.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a person able to do a variety of different jobs acceptably well
- n. a man skilled in various odd jobs and other small tasks
1610s, from sense Jack ("man (generic term)"). Originally a term of praise (competent in many endeavors), today generally used disparagingly, with emphasis on (implied or stated) “master of none”, as in later longer form jack of all trades, master of none. (Wiktionary)