Green’s Dictionary of Slang

1. to walk arm in arm.

1860		Hotten Dict. of Modern Sl. etc. (2nd edn).
1873		Sl. Dict.
1895		Crowe Aus. Sl. Dict. 21: Crooky, to walk arm-in-arm; making love to a girl.

2. to court a woman.

1860		Hotten Dict. of Modern Sl. etc. (2nd edn).
1864, 1867, 1870		Hotten Sl. Dict.