Green’s Dictionary of Slang

chow v.¹

to chatter, to prattle.

1885		Bulletin (Sydney) 7 Mar. 17/3: For once we were fairly ‘got at.’ The stolid simplicity of the man got at us. But on our way home, when perched upon a tram-car, we had a show of chowing over his assertion, we – why proceed? It was well for him, and for the flute, that he wasn’t handy.
1978		in Casey ‘Kid’ Motsisi Casey and Co. Intro.: I guess he thought I was rather too honest to chow ‘mazuma’.

In phrases