edge ‘a thin, sharpened side’
(Cf.: bake-batch, wake-watch, make-match)
Lexical development traced from the Tamil root:
E. egge, hegge, hedge < O.E. ecg ‘corner, edge, point’ < Proto-G agjo < ej < ak < Tamil akku
Other meaning: the border of a thing, sharp side of a blade, boundary of a surface.