Praetorian Guard prae·to·rian·guard uncommon noun 1. a member of the Praetorian Guard SynonymsPraetorian Guard 2. the elite bodyguard of a Roman Emperor SynonymsPraetorian Guard Related words Broader terms guardbodyguard Parts Praetorian Guard Part of Praetorian Guard WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.