Strong's #2496: challamiysh (pronounced klal-law-meesh')
 probably from 2492 (in the sense of hardness); flint:--flint(-y), rock.
Brown-Driver-Briggs Hebrew Lexicon:
 ּׁ 
  challâmı̂ysh 
 
 1) flint, rock
 
  Part of Speech: noun masculine
Relation: probably from H2492 (in the sense of hardness)
Usage:
This word is used 5 times:
Deuteronomy 8:15: "who brought thee forth water out of the rock  of flint;"
Deuteronomy 32:13: "honey out of the rock, and oil out of the flinty  out of the flinty rock;"
Job 28:9: "He putteth forth his hand  upon the rock; he overturneth the mountains by the roots."
Psalms 114:8: "the rock into a standing water,  the flint into a fountain of waters."
Isaiah 50:7: "be confounded: therefore have I set my face  like a flint, and I know that"