Cawk

Cawk (kak) noun [ Prov. English cauk limestone. A doublet of chalk .] (Min.) An opaque, compact variety of barite, or heavy spar. [ Also written cauk .]
Found on http://www.encyclo.co.uk/webster/C/41

Cawk

• (n.) An opaque, compact variety of barite, or heavy spar.
Found on http://thinkexist.com/dictionary/meaning/cawk/

Cawk

Cawk is an opaque, compact variety of barite, or heavy spar.
Found on http://www.probertencyclopaedia.com/browse/HC.HTM

cawk

Cock
Found on http://www.noslang.com/dictionary/c/
No exact match found