semiplume

enUK Related to semiplume: down feather, filoplume

semiplume

(ˈsɛmɪˌpluːm) ornitholna semiplume featheradj(of a bird's feather) intermediate in appearance between a contour feather and a down feather, having a long shaft and a downy tip; such feathers are located beneath the bird's contour feathers and provide insulation