Search Result for "pyrophoric alloy":
Wordnet 3.0

NOUN (1)

1. an alloy that emits sparks when struck or scratched with steel; used in lighter flints; 



WordNet (r) 3.0 (2006):

pyrophoric alloy
    n 1: an alloy that emits sparks when struck or scratched with
         steel; used in lighter flints