Pe·le's hair 
(pālāz)
(pālāz)n.
Thin strands of volcanic glass that form when lava ejected from a volcano is spun out and stretched by the wind.
[Translation of Hawaiian lauoho o Pele : from lauoho, hair of the head (lau, leaf, frond + oho, hair of the head) + o, of + Pele, volcano goddess (from pele, lava flow).]