0520 'ammah {am-maw'}
prolonged from 0517; TWOT - 115c; n f
AV - cubit 242, measure 1, post 1, not translated 1; 245
1) cubit - a measure of distance (the forearm), roughly 18 in (.5m).
There are several cubits used in the OT, the cubit of a man or common
cubit (Dt 3.11), the legal cubit or cubit of the sanctuary (Eze 40.5)
plus others. See a Bible Dictionary for a complete treatment.