Kauai Kauai /ˈkaʊˌaɪ/

noun

1. An island of Hawaii to the northwest of Oahu  ( Kauai , Kauai Island )
   an island of Hawaii to the northwest of Oahu
   
   

 stone-face stone-face /ˈstoʊnˌfeɪs/

noun

1. Any plant of the genus Lithops native to Africa having solitary yellow or white flowers and thick leaves that resemble stones  ( flowering stone , lithops , living stone , stone life face , stone plant , stone-face , stoneface )
   any plant of the genus Lithops native to Africa having solitary yellow or white flowers and thick leaves that resemble stones
   
   

 cross-link cross-link /ˈkrɔːs lɪŋk/

noun

1. A side bond that links two adjacent chains of atoms in a complex molecule  ( cross-link , cross-linkage )
   a side bond that links two adjacent chains of atoms in a complex molecule
   
   

verb

1. Join by creating covalent bonds (of adjacent chains of a polymer or protein)  ( cross-link )
   join by creating covalent bonds (of adjacent chains of a polymer or protein)
   

 argentite argentite /ˈɑrdʒəntaɪt/

noun

1. A valuable silver ore consisting of silver sulfide (Ag2S)  ( argentite )
   a valuable silver ore consisting of silver sulfide (Ag2S)
    Mining companies often extract argentite due to its richness in silver sulfide.
   Mining companies often extract argentite due to its richness in silver sulfide.