Green’s Dictionary of Slang

(Aus.) elastic-sided boots.

1992		Bulletin vol. CXIV 47/3: PIL moved 20,000 pairs of Blundstones into Europe last year.
2003		www.blundstone.com.au 🌐 Blundstone: Australian for boot.
2010		J. O’Connor Without Warning 105: Sean held up his Blundstones: the soles were melted, no tread left.
2010		C. Greeff Ayahuasco Diaries 212: I shifted into a more comfortable position; put my legs out full-length, Blundstone-encased feet next to the fire. [...] ‘But these boots are Blundstones. Made in Australia. Fire-resistant’.