Dict: easton - Gerah

easton:

Gerah @ a bean, probably of the carob tree, the smallest weight, and also the smallest piece of money, among the Hebrews, equal to the twentieth part of a shekel kjv@Exodus:30:13; kjv@Leviticus:27:25; kjv@Numbers:3:47). This word came into use in the same way as our word "grain," from a grain of wheat.