The Collaborative International Dictionary of English v.0.48:

Cynoscephalae \Cynoscephalae\ n.
   1. the battle that ended the second Macedonian War (197 BC);
      the Romans defeated King Philip of Macedon.

   Syn: battle of Cynoscephalae.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Cynoscephalae
    n 1: the fields in Thessaly where in 197 BC the Romans defeated
         the Macedonians
    2: the battle that ended the second Macedonian War (197 BC); the
       Romans defeated Philip V who lost his control of Greece [syn:
       Cynoscephalae, battle of Cynoscephalae]