kapok

[ key-pok ]
/ ˈkeɪ pɒk /

noun

the silky down that invests the seeds of a silk-cotton tree (ka·pok tree), Ceiba pentandra, of the East Indies, Africa, and tropical America: used for stuffing pillows, life jackets, etc., and for acoustical insulation.
Also called Java cotton.

Origin of kapok

1740–50; < Javanese (or Malay of Java and Sumatra) kapuk the name of the tree

Example sentences from the Web for kapok

British Dictionary definitions for kapok

kapok
/ (ˈkeɪpɒk) /

noun

a silky fibre obtained from the hairs covering the seeds of a tropical bombacaceous tree, Ceiba pentandra (kapok tree or silk-cotton tree): used for stuffing pillows, etc, and for sound insulation Also called: silk cotton

Word Origin for kapok

C18: from Malay