The Collaborative International Dictionary
Forty-niner
Forty-niner \For`ty-nin"er\, n. One the miners who took part in the California gold rush in 1849; an argonaut. [Colloq., U. S.]
Wiktionary
forty-niner
alt. A miner or other person who took part in the California gold rush of 1849. n. A miner or other person who took part in the California gold rush of 1849.
WordNet
forty-niner
n. a miner who took part in the California gold rush in 1849