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A halberd with a long shaft and two-sided blade, carried by medieval foot soldiers.
[Middle English, from Old French guisarme, possibly from Old High German getīsarn : getan, to weed + īsarn, iron; see eis- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Arms & Armour (excluding Firearms)) a long-shafted battle-axe with a sharp point on the back of the axe head
[C13: from Old French guisarme, probably from Old High German getīsarn weeding tool, from getan to weed + īsarn iron]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014