(Australia, Ireland, UK) A diminutive of the male given name Barry.
Hung around the deserted shopping centre with Barry Kent and the lads.[…] Barry graciously gave me permission to call him 'Baz'. 1984, Sue Townsend, The Growing Pains of Adrian Mole, →ISBN, page 164:
There was me and Baz – Barry Stevens, my DS – in one car. 2003, Peter Robinson, Aftermath: An Inspector Banks Mystery, unnumbered page:
(Australia, Ireland, UK) A diminutive of the male given name Basil.
That's what Baz—Basil Younger——said when I put it to him. 2005, Reginald Hill, Who Guards a Prince, page 169:
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Bazza
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Baz en · PROPN · etymology 2
Etymology
Two main origins:
* Borrowed from Persian باز (bâz, “falcon”).
* Borrowed from Spanish Baz.