See Also: Dark Horse - Horse Racing(gambling)
dark horse(dictionary)
Dark Day - Horse Racing(gambling)
Dark Bay or Brown - Horse Racing(gambling)
dark(1)(dictionary)
dark(2)(dictionary)
dark(dictionary)
dark cell(medicine)
dark 1, adjective(dictionary)
dark T2 lesion(medicine)

dark horse (oh)



n [C]
someone who is not well known, and who surprises people by winning a competition
::In the 1955 golf championship, dark horse Jack Fleck defeated Ben Hogan.
BrE someone who does not tell people much about themselves, but who has surprising qualities or abilities
::She's a dark horse. I didn't know she'd written a novel.