ETYMOLOGY
of uncertain origin; probably influenced by jig and jog
EXAMPLE
“… Even Humfrey King finds an excuse for his own mediocrity in that it is not the lowest: ‘I see my inferiours in the gifts of learning, wisdome, & vnderstanding, torment the Print daily with lighter trifles, and Iiggalorums, then my russet Hermit is, the which hath made me the bolder to shoulder in amongst the’…”
From: Halfe-penny-worth of Wit
By Humphrey King, 1613
Lexicophilia 