Green’s Dictionary of Slang

1. a suit.

1960		J. Franklyn Dict. of Rhy. Sl.
1971		J. Jones Rhy. Cockney Sl.
1984		Partridge DSUE (8th edn).
1992		R. Puxley Cockney Rabbit.

2. in pl., boots.

1937		L. Lane Me and My Girl I iii: bill: You might get these trousers altered, they’re too tight under me arms — like me piccolo and flutes.
1960		J. Franklyn Dict. of Rhy. Sl.
1984		Partridge DSUE (8th edn).