What is (a) A down feather. (b) The aftershaft of a feather. See Illust. under Feather. (c) One of the featherlike scales of certain male butterflies called?

plumule — (Zoöl.) (a) A down feather. (b) The aftershaft of a feather. See Illust. under Feather. (c) One of the featherlike scales of certain male butterflies. (Webster's 1913.)

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