Green’s Dictionary of Slang

gimick n.

(US tramp) a lame person.

1924		F.J. Wilstach Sl. Dict. Stage.
1931		Irwin Amer. Tramp and Und. Sl. 85: GIMICK. – A lame person.
1962		Ragen & Finston World’s Toughest Prison 800: gimick – A lame person.