used as pigeon-English, especially inQueensland and New South Wales, in the sense of yabber,to speak.
1834. L. E. Threlkeld, `Australian Grammar,' p. 10:
[As a barbarism] « piyaller, to speak.»
1885. R. M. Praed, `Head Station,' p. 314:
«Hester seized the shrinking black and led him forward, wildlycrying that she would `pialla' the Great Spirit, so that noevil should befall him.»