出典:Wiktionary
Originally an allusion to an unknown horse with a dark coat winning a race, as used in the 1831 novel The Young Duke by Benjamin Disraeli (1804–1881).[1]
出典:Wikipedia
出典:『Wikipedia』 (2011/07/22 15:02 UTC 版)
Dark horse is a term used to describe a little-known person or thing that emerges to prominence, especially in a competition of some sort.