Definition of pinfeather in English:

pinfeather

Syllabification: pin·feath·er
Pronunciation: /ˈpinˌfeT͟Hər
 
/

noun

Ornithology
An immature feather, before the veins have expanded and while the shaft is full of fluid.
More example sentences
  • Changes in the physical structure of the pin feather during growth may be the most likely explanation for the increased resistance to heat loss in both groups of birds.
  • Cockatiels are born nearly naked and pin feathers start to appear at about seven days.
  • On that particular afternoon I recall a lot of references to ‘pin feathers’ interspersed with colorful expletives.

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