Definition of "blanky"

[…] Bill was a wonderful instructor."'Mark time on that blanky clutch,' he'd yell, and Spud would put his foot on the brake-pedal.

1914, Edgar Wallace, Smithy

"Slept last night under a railway bridge. Give you my word I was so blanky tired I hardly heard the blanky trains go over it."

1938, Norman Lindsay, Age of Consent, 1st Australian edition, Sydney, N.S.W.: Ure Smith, published 1962, page 71

Why, strike me pink, I'd sooner drink / With a cove sent up for arson / Than a rain-beseeching, preaching, teaching, / Blanky, cranky parson.

1974, Bill Wannan, With Malice Aforethought, page 85

I have repaired the underarms in the sweater so many times it has the love-punished look of the blanky I slept with until age 9.

2009 June 18, Cintra Wilson, “A Spirit in a Material World”, in New York Times‎