gerah

Concise Bible Dictionary:

Strong’s Dictionary of Hebrew Words:

Number:
1626 (find all occurrences in KJV Bible)
Transliteration:
gerah
Phonic:
gay-raw’
Meaning:
from 1641 (as in 1625); properly, (like 1620) a kernel (round as if scraped), i.e. a gerah or small weight (and coin)
KJV Usage:
gerah

Jackson’s Dictionary of Scripture Proper Names:

one twentieth of a shekel

From Manners and Customs of the Bible:

1. What the “shekel of the sanctuary” was is not definitely stated. There are those who think it was worth double the value of the ordinary shekel. Others, again, suppose that “the shekel of the sanctuary” was the standard to which all shekels must conform if of full weight. See note on Genesis 23:1616And Abraham hearkened unto Ephron; and Abraham weighed to Ephron the silver, which he had named in the audience of the sons of Heth, four hundred shekels of silver, current money with the merchant. (Genesis 23:16) (#26).
2. The gerah was the smallest weight known to the Hebrews, and the smallest. piece of money used by them. It weighed between eleven and twelve grains, and was in value about three cents.