ka·pok /ˈkeˌpɑk/
  木棉花,木絲棉
  Ka·pok n.  Bot. A silky wool derived from the seeds of Ceiba pentandra (syn. Eriodendron anfractuosum), a bombaceous tree of the East and West Indies.
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  kapok
       n 1: from the kapok tree; used for stuffing and insulation [syn:
            silk cotton, vegetable silk]
       2: massive tropical tree with deep ridges on its massive trunk
          and bearing large pods of seeds covered with silky floss;
          source of the silky kapok fiber [syn: ceiba tree, silk-cotton
          tree, white silk-cotton tree, Bombay ceiba, God tree,
           Ceiba pentandra]