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1 definition by Amtracker.com

 
1.
An Amtracker is a term used to reference a United States Marine with a primary military occupation (MOS) of either 1833 - Amphibious Assault Vehicle Crewman or 2141 - Amphibious Assault Vehicle Repairer / Technician.
Most of the Marines in the Court House Bay area are Amtrackers.
by Amtracker.com January 18, 2012