Green’s Dictionary of Slang

a biscuit, often in pl.

1968		J. O’Grady Gone Troppo (1969) 66: Eat your bickie and shut up.
1973		M. Harris Angry Eye 107: Derek would bring the protesters tea and bikkies.
1982		H. Beaton Outside In I ii: Y’got any biccies Ma? I’m starvin’.
1986		T. Winton That Eye, The Sky 91: Mum’s bickies – the ones made of bran and oatmeal.
1991		M.B. ‘Chopper’ Read Chopper From The Inside 66: We’d drink coffee and eat Choc Royal bikkies.
1999		Guardian G2 22 July 7: No more than the price of a few biccies.
1999		Indep. 30 Aug. 16: The bikkie in question is dark on the outside and creamy in the middle.
2000		N. Barlay Crumple Zone 74: Tea an’ biccies another time.
2000		P. Temple Dead Point (2008) [ebook] Have a bikkie. Bake em ourselves.
2011		J.M. Wood 60-Second Secrets 5: Seasonal bikkies for smart cookies Why not celebrate spring with some seasonal bikkies like these citrus drops?
2014		T. Black Artefacts of the Dead [ebook] If we have a mole on the team feeding biccies to Sinclair, then I’ll be feeding them into a mincer.