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 Exodus:30:13; Leviticus:27:25; Numbers:3:47). This word came into use in the same way as our word "grain," from a grain of wheat.
naves:
GERAH@ -A weight equal to thirteen and seven-tenths grains, Paris -Also a coin equivalent to about three cents American money and three half-pence English money Exodus:30:13; Leviticus:27:25; Numbers:3:47