Green’s Dictionary of Slang

1. (Aus./N.Z.) a Roman Catholic; thus Tykeland n., Ireland.

1900		Bulletin (Sydney) 18 Aug. 20/3: The Bulletin will continue to help Premier Seddon all it knows in his democratic and cosmopolitan capacity. In his capacity as a Jingo and a bigoted Tyke it will continue to jump upon him with all its feet.
1941		Baker Popular Dict. Aus. Sl. 76: Tike, tyke, a Roman Catholic.
1961		P. White Riders in Chariot 208: I would never have suspected you Rosetrees of being tykes. Only the civil servants are Roman Catholics here.
1969		A. Buzo Rooted III i: You remember, the one [football match] against Tykeland.
1988		McGill Dict. of Kiwi Sl. 116/2: tyke Catholic.
1993		B. Moore Lex. of Cadet Lang. 405: usage: ‘The tykes are taking over. Next thing you know the Pope’ll be a padre at Duntroon!’.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].

2. see kike adj. (1) [? mis-reading of sense 1].