Dictionary.com
Thesaurus.com

nickeline

American  
[nik-uh-leen] / ˈnɪk əˌlin /

noun

  1. a usually massive, pale copper-red mineral, nickel arsenide, NiAs, with a metallic luster.


nickeline British  
/ ˈnɪkəˌliːn /

noun

  1. another name for niccolite

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of nickeline

First recorded in 1780–90; nickel + -ine 2