The Collaborative International Dictionary of English v.0.48:

Cor- \Cor-\ (k[o^]r-).
   A prefix signifying with, together, etc. See Com-.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cor \Cor\ (k[^o]r), n. [Heb. k[=o]r.]
   A Hebrew measure of capacity; a homer. [Written also core.]
   [1913 Webster]

Easton's 1897 Bible Dictionary:

Cor
   This Hebrew word, untranslated, denotes a round vessel used as a
   measure both for liquids and solids. It was equal to one homer,
   and contained ten ephahs in dry and ten baths in liquid measure
   (Ezek. 45:14). The Rabbins estimated the cor at forty-five
   gallons, while Josephus estimated it at about eighty-seven. In 1
   Kings 4:22; 5:11; 2 Chr. 2:10; 27:5, the original word is
   rendered "measure."