Green’s Dictionary of Slang

kani n.

[SE consumption, pre-20C name for tuberculosis]
(W.I.)

1. a bad cough, usu. with a temperature.

[WI]cited in Cassidy & LePage Dict. Jam. Eng. (1980).

2. a person who is suffering from this.

[WI]cited in Cassidy & LePage Dict. Jam. Eng. (1980).