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biddy-biddy

British  
/ ˈbɪdɪˌbɪdɪ /

noun

  1. a low-growing rosaceous plant, Acaena viridior of New Zealand, having prickly burs

  2. the burs of this plant

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of biddy-biddy

from Māori piri piri