Green’s Dictionary of Slang

nug v.

[dial. nug, to jog with the elbow, to strike or Lat. nugae, trifles]

to fondle, to indulge in sexual foreplay, to have sexual intercourse.

[UK]R. Copland Complaynte of Them that ben To Late Maryed in Collier Illustrations I 10: My wyfe shewed to me her proper dugge, / On the mornynge her delyte for to make, / And to haue me for to play nugge a nugge.
[US]Eble Campus Sl. Mar. 5: nuggie/nugi – kissing and petting on soap operas [...] heavy petting or love making on dates.

In compounds

nugging dress (n.)

1. an old-fashioned or out of the ordinary style of dress.

[UK]B.E. Dict. Canting Crew n.p.: Nugging-dress an odd or particular way, out of the Fashion.
[UK]New Canting Dict. [as cit. c.1698].
[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]Lex. Balatronicum.
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue.

2. a loose dress, denoting a courtesan.

[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]Lex. Balatronicum.
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue.