penna

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pen·na

 (pĕn′ə)
n. pl. pen·nae (pĕn′ē)
A contour feather of a bird, as distinguished from a down feather or a plume.

[Latin, feather; see pet- in Indo-European roots.]

pen·na′ceous (pĕ-nā′shəs) adj.

penna

(ˈpɛnə)
n, pl -nae (-niː)
(Zoology) ornithol any large feather that has a vane and forms part of the main plumage of a bird
[Latin: feather]
pennaceous adj

pen•na

(ˈpɛn ə)

n., pl. pen•nae (ˈpɛn i)
a contour feather, as distinguished from a down feather.
[< Latin: feather. See pen1]
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