FULGURITE
Meaning of FULGURITE in English
/ful"gyeuh ruyt'/ , n.
a tubelike formation in sand or rock, caused by lightning.
[ 1825-35; fulgur (see FULGURATE) + -ITE 1 ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012