UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈbɑːbjuːl/US:USA pronunciation: respellingUSA pronunciation: respelling(bärbyo̅o̅l)

WordReference Random House Unabridged Dictionary of American English © 2020
bar•bule  (bärbyo̅o̅l),USA pronunciation n. 
  1. Biologya small barb.
  2. Birdsany of the small processes fringing the barbs of a feather.
  • Latin barbula. See barb1, -ule
  • 1825–35

Collins Concise English Dictionary © HarperCollins Publishers::
barbule /ˈbɑːbjuːl/ n
  1. any of the minute hairs that project from a barb and in some feathers interlock by hooks and grooves, forming a flat vane
Etymology: 19th Century: from Latin barbula a little beard, from barba beard
'barbule' also found in these entries:

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