pickaxe
‘a pick with a sharp point on one side of the head’
Lexical development traced from the Tamil root:
E. pecas, peyckes, pikens < M.E. picas, pikeis < A.F. piceis, O.F. pocois < Med.Lat. picosa ‘pick,’ related to Lat. picus ‘woodpecker, a word having a sharp beak to make holes’ < aks < Tamil akku