1. dark horse - Noun
2. dark horse - Adjective
3. dark horse - Phrase
a racehorse about which little is known
a political candidate who is not well known but could win unexpectedly
Source: WordNetdark-horse
Black beauty - he's a dark horse. Tim Vine
Baby do you dare to do this? Cause I'm coming at you like a dark horse. Katy Perry
Any artist that is even surviving right now is a dark horse because things change pretty fast. You're a superstar one day and wake up the next day and you're anonymous. To be successful in any way is beating the odds right now, I think. Chad Kroeger
I've done work for hire. I've worked for DC and Dark Horse. Rob Walton
That and the fact that I knew that nobody was going to publish my work at Dark Horse or DC or anywhere. Rob Walton
A Town Like Alice's (1997) Michael Bute Heritage Publications, Sunderland Alice in Sunderland (2007) Brian Talbot Dark Horse publications. Source: Internet