cigaboo, n. — Green’s Dictionary of Slang

cigaboo n.

also ciggaboo, ciggie-boo, ciggie-poo

[abbr. + sfx -boo/-poo]

(Aus./US) a cigarette.

1958		cited in Partridge DSUE (1984) 219/2: cig(g)aboo A cigarette.
1967–8		Baker et al. CUSS 96: Ciggie-boo [...] Ciggie-poo Cigarette.
1988		M. Atwood Cat’s Eye (1989) 209: They [...] smoke cigarettes. They call them ciggie-poos.