Shadrach

• (n.) A mass of iron on which the operation of smelting has failed of its intended effect; -- so called from Shadrach, one of the three Hebrews who came forth unharmed from the fiery furnace of Nebuchadnezzar. (See Dan. iii. 26, 27.)
Found on http://thinkexist.com/dictionary/meaning/shadrach/

Shadrach

Sha'drach noun (Metal.) A mass of iron on which the operation of smelting has failed of its intended effect; -- so called from Shadrach , one of the three Hebrews who came forth unharmed from the fiery furnace of Nebuchadnezzar. (See Dan. iii. 26, 27. )
Found on http://www.encyclo.co.uk/webster/S/80

Shadrach

Shadrach (shā'drăk) , one of the Three Young Men.
Found on http://www.infoplease.com/ce6/people/A0918637.html
No exact match found