throwback

• POS: Noun
• HYPHEN: throw=back

CIDE DICTIONARY

throwback, n. 

•  the reappearance in an organism of characteristics of an earlier ancestral type; atavism.  [PJC]
•  an organisms having characteristics of an earlier ancestral type.  [PJC]

THESAURUS

throwback

atavism, backset, backsliding, backward deviation, backward motion, backward step, check, comedown, descent, down, falling back, lapse, reaction, recession, recidivation, recidivism, recrudescence, recurrence, reentry, refluence, reflux, regress, regression, relapse, renewal, retroaction, retrocession, retroflexion, retrogradation, retrogression, retrusion, return, reversal, reverse, reverse of fortune, reversion, rollback, setback, severe check, sternway