/thray'koh frij"ee euhn/ , n.
1. a hypothetical branch of Indo-European implying a special genetic affinity between the meagerly attested Thracian and Phrygian languages.
adj.
2. of, belonging to, or pertaining to Thraco-Phrygian.
[ Thraco- ( Thraiko-, comb. form of Thráike Thrace) + PHRYGIAN ]