American Heritage Dictionary
(6)
Century Dictionary
(22)
GNU Webster's 1913
(1)
WordNet
(2)
Elsewhere on the web
One product line that was specifically referenced as a keeper was the Altix shared-memory system, and its next-generation incarnation, UltraViolet.— HPCwire Soundbite
While Smith concedes that the keeper has been affected by Romanov's punishment, he is hoping that the keeper has not played his last game for the Tynecastle side.
"I just saw where the keeper was and put it where he wasn't."— Weekend Mixtape
However, the Brazilian tried to round Jones when a shot would have been better and the keeper was able to save.— Soccerway.com

Century Dictionary (1)
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 a few times a week.