Definition of "baccy"

To the "Nut" then, with its dirty little smoking-room, clouded with fumes arising from baccies of every description; curling upwards from the short black Irish clay bowl, full of strong ship's baccy, as well as from the best of Havannahs […]

1882, Chums: A Tale of the Queen's Navy, volume 1, page 200

No one ever see him down on his luck till this cussed fever took him, Our rations was often short, but it was share and share alike down to the last pipe o' baccy.

1887, Harriet W. Daly, Digging, Squatting, and Pioneering Life in the Northern Territory of South Australia, page 168

"I'll prove I can see you. You've got a pipe in your mouth." ¶ "Anyone that knows the smell of baccy could tell that," said Diggle.

1956, C. S. Lewis, chapter 13, in The Last Battle, Collins, published 1998