The Collaborative International Dictionary of English v.0.48:
lumberjack \lum"ber*jack`\ n. 1. a person who works at lumbering; a lumberman. Syn: lumberman, timberman. [WordNet 1.5] 2. (Zool.) The grey jay. [Canadian] [PJC]WordNet (r) 3.0 (2006):
lumberjack n 1: a person who fells trees [syn: lumberman, lumberjack, logger, feller, faller] 2: a short warm outer jacket [syn: lumberjack, lumber jacket]