Strong's #1235: beqa` (pronounced beh'-kah)
from 1234; a section (half) of a shekel, i.e. a beka (a weight and a coin):--bekah, half a shekel.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
beqa‛
1) half, part also called "shekel of the sanctuary" or "holy shekel"
2) half a shekel (metonymy) There appears to be at least three different shekels, one of silver, gold and copper. See a Bible Dictionary for a complete treatment of the subject.
Part of Speech: noun masculine
Relation: from H1234
Usage:
This word is used 2 times:
Genesis 24:22: "took a golden earring of half a shekel weight, and two bracelets for"
Exodus 38:26: " A bekah for every man, that is, half a shekel, after the shekel of the sanctuary, for every one that went"