The Collaborative International Dictionary
Swipper
Swipper \Swip"per\, a. [From AS. swipian to whip, shake, whirl; akin to sw[=a]pan to sweep. See Swoop.] Nimble; quick. [Obs. or Prov. Eng. & Slang]
Wiktionary
swipper
a. (context obsolete UK dialect slang English) nimble; quick