kapoks

Noun

kapok (countable and uncountable, plural kapoks)

1. A silky fibre obtained from seed pods of the silk-cotton tree (Ceiba pentandra) used for insulation and stuffing for mattresses, pillows, etc.
   • The moon came out of hiding and for a moment Jerry forgot his anxiety as a little grey-clad figure, small and sturdy [...], in a kapok coat and bulging proletarian cap, lowered himself over the side and leapt for the waiting arms of the sampan's crew.1977, John Le Carré, The Honourable Schoolboy, Folio Society, published 2010, page 492

   Synonyms:

   mumian

2. A silk-cotton tree (Ceiba pentandra).

   Synonyms:

   kapok tree, mapou, mumian

3. A cotton tree, Malabar silk-cotton tree, or red silk-cotton tree (Bombax ceiba).

   Synonyms:

   kapok tree