Pulu \Pu"lu\, n.
A vegetable substance consisting of soft, elastic, yellowish
brown chaff, gathered in the Hawaiian Islands from the young
fronds of free ferns of the genus {Cibotium}, chiefly
{Cibotium Menziesii}; -- used for stuffing mattresses,
cushions, etc., and as an absorbent.
[1913 Webster]