OMER, HOMER, or CHOMER, in Jewish antiquities, a measure containing ten baths, or seventy-five gallons and five pints, as a measure of things liquid, and thirty-two pecks and one pint as a measure of things dry. The corus or omer was most commonly a measure for things dry, and the greatest that was used among the Jews. It contained, according to the rabbins, ten ephahs or thirty sata or seahs. Corus is the most usual term in the historical writers, and omer or chomer among the prophets.

Corus is also used in some of our old writers for eight bushels, or a quarter; thus, decem coros tritici, six decem quartarum.