The singular biceps
And check out this correction from the Guardian Unlimited, right up our alley:
Jonny Wilkinson (Gregan's Wallabies plot new England fall, page 27, November 23) is recovering from a biceps injury, not a bicep injury. The singular of biceps is biceps. The plural of biceps is biceps.Via Regrets the Error.
Biceps definition. (It does list "bicepses" as an alternate plural.)
Instances of the wrong "bicep" in Google News. That's 280 errors right now, in some of the nation's biggest papers.