rear guard definition by Webster's New World
Origin: Middle English rier garde ; from Anglo-French reregard ; from Old French ; from riere, backward (; from Classical Latin retro: see retro-) plush gard, guard
rear guard definition by American Heritage Dictionary
Origin: Middle English reregarde, from Old French : rere, backward (from Latin retrō; see re- in Indo-European roots) + guarde, guard (from guarder, to defend; see guard).
- Of or relating to a rear guard.
- Of or relating to economic, political, or social resistance: mounting a rear-guard effort to prevent tax increases.