Both the name and its explanation, “a half shekel,” are given in Ex. 38:26. The word properly means a “division,” a “part.” (R.V., “beka.”)
Bekah
1 verse
Exodus
Exodus 38:26
A bekah for every man, that is, half a shekel, after the shekel of the sanctuary, for every one that went to be numbered, from twenty years old and upward, for six hundred thousand and three thousand and five hundred and fifty men.
From Easton's Bible Dictionary
Matthew George Easton, 1897