ETYM Old Eng. nine, nihen, AS. nigon, nigan; akin to Dutch and LG. negen, OS. and OFries. nigun, Old High Germ. niun, German neun, Icel. nîu, sw. nio, Dan. ni, Goth. niun.
Denoting a quantity consisting of one more than eight and one less than ten; SYN. 9, ix.

The cardinal number that is the sum of eight and one; SYN. 9, IX, niner, Nina from Carolina, ennead.