"throwback" in the noun sense
1. atavist, throwback
an organism that has the characteristics of a more primitive type of that organism
2. atavism, reversion, throwback
a reappearance of an earlier characteristic
"throwback" in the adjective sense
1. atavistic, throwback
characteristic of an atavist
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License