rhyming slang for "prick," which would connect it rather to
wick (2).
wick"dairy farm," now surviving, if at all, as a localism in East Anglia or Essex, it was once the common O.E. wic "dwelling place, abode," then coming to mean "village, hamlet, town," and later "dairy farm" (e.g. Gatwick "Goat-farm"). Common in this latter sense 13c.-14c. The word is a general Gmc. borrowing
from L. vicus "village, hamlet" (see
vicinity). Cf. O.H.G. wih "village," Ger. Weichbild "municipal area," Du. wijk "quarter, district," O.Fris. wik, O.S. wic "village."
wickedc.1275, earlier wick (12c.), apparently an adj. use of O.E. wicca "wizard" (see
wicca). For evolution, cf.
wretched from
wretch. Slang ironic sense of "wonderful" first attested 1920, in F. Scott Fitzgerald.