Green’s Dictionary of Slang

pimgenet n.

also pimginet, pimginnit, pimpgennet
[? SE pomegranate, a fruit that might be seen as being covered in ‘pimples’. Halliwell, Dict. of Archaic and Provincial Words (1847), cites the ‘old saying’: ‘Nine pimgenets make a pock royal’]

a prominent, red pimple; also as adj., pimpled.

[UK]J. Dunton Ladies’ Dict. n.p.: To stand ... parching his pimginits, carbuncles, and buboes.
[UK]B.E. Dict. Canting Crew n.p.: Pimginnit, a large, red, angry Pimple.
[UK]N. Ward London Spy XI 271: Old Batter’d Bullies, some with Carbonado’d Faces, and others with Pimpgennet Noses.
[UK]N. Ward Hudibras Redivivus II:2 23: Ladies or Dowdies, Wives or Lasses, / With Scarlet or Pimgennet Faces.
[UK] in D’Urfey Pills to Purge Melancholy V 314: I clear the Lass with Wainscot Face and from Pim-ginets free.