American Heritage Dictionary
(4)
Century Dictionary
(4)
GNU Webster's 1913
(1)
WordNet
Elsewhere on the web
That was a hell of a game and respect to ouch, ouch, Holmes and Ben.— Blog updates
What a great camera, definitely the best (and, ouch, the most expensive) I've ever owned.— mythicaldude
Such desperate attempts to claim superiority - ouch, the lurking trolls get more freaky on each passing day.— Think Progress

American Heritage Dictionary (1)
Century Dictionary (2)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word several times a year.