Green’s Dictionary of Slang

(Aus.) a euph. for bloody adj. (1)

1900

Bulletin (Sydney) 10 Mar. 24/2: This scribe had the temerity [...] to back three consecutive winners with the same ‘Booky,’ and, on joyfully presenting his tickets [...] was assailed with much blasphemy and informed that anyone who backed three winners running had a gore-stained ‘hide.’.