Green’s Dictionary of Slang

(Aus.) a blocker, i.e. one who occupies a small block of rural or semi-rural land.

1944		A.J. & J.J. McIntyre Country Towns of Victoria 185: The blockies’ wives are in everything and it is the town women who are in the minority [AND].
1967		E. Huxley Shining Eldorado 112: Round Mildura the irrigated land is squared off into rectangular blocks and many of the blockies, as the owners are called, are Greeks or Italians [AND].
1973		(con. 1930s) F. Huelin ‘Keep Moving’ 62: Th’ blockees want us here f’r th’ pickin’. They’ll back us.
1984		Bulletin issues 5414-22 38/1: The blockie’s life has never been easy.
1999		G. Seal Lingo 77: Other words affected by Australia’s seemingly insatiable need to abbreviate in this way include pressie, rellie, biccie, chrissie, footy, cossie, mozzie, blockie [...] gladdie (gladioli) and the classic arvo (afternoon) to name only some.
2003		McGill Reed Dict. of N.Z. Sl. 25: blockie Small-time, casual hobby farmer of a lifestyle block ANZ 1980s.