Brown-Driver-Briggs (BDB)
H520a
H520a אַמָּה ell , cubit H520b אַמָּה
Brown-Driver-Briggs Hebrew Lexicon (BDB), 1906 — public domain
Strong's H520 · Hebrew
'ammah
am-maw'
prolonged from 517; properly, a mother (i.e. unit of measure, or the fore-arm (below the elbow), i.e. a cubit; also a door-base (as a bond of the entrance)