Definition of "codger"

Now I was a forsaken codger snuffling disgracefully from a beautiful floozy's abuse.

1976 September, Saul Bellow, Humboldt’s Gift, New York, N.Y.: Avon Books, page 418

‘I haven’t been drinking your health, my codger,’ replied Mr. Squeers; ‘so you have nothing to do with that.’

1839, Charles Dickens, Nicholas Nickleby