Green’s Dictionary of Slang

1. (Anglo-Ind.) a woman’s garment or embellishment thereof.

1875		‘Aliph Cheem’ Lays of Ind (1905) 1: Almond-eyed girls, / Dressed in bangles and pearls, / And other scant jims / Disclosing their limbs [ibid.] 4: And other rich jims / With fat podgy limbs / And bright yellow streaks / All over their cheeks.
1916		B.M. Croker Babes in the Wood 211: ‘She [...] rides like a man, wears divided skirt, — the latest ‘jim’ — all the go at home’ .

2. jewellery, diamonds.

1983

R. Klein Jailhouse Jargon and Street Sl. [unpub. ms.].