Definitions
1.nounA specimen of the now extinct species Homo neanderthalensis.
2.nounA primitive person.
3.adjectiveOf or pertaining to Homo neanderthalensis."The capacity of the Neanderthal skull was 10% larger than that of modern humans."
4.adjectiveOld-fashioned, opposed to change (in allusion to Homo neanderthalensis).
5.adjectiveOf or pertaining to the Neander Valley in Germany.