funus

From Proto-Italic *fūnos, of uncertain origin. Possibly from earlier *θūnos, from Proto-Indo-European *dʰu-Hnós, from a root *dʰew-, which would make it a cognate with English death if in the "to die" sense, or alternatively Proto-Celtic *dūnom (“stronghold, rampart”) if in a different sense meaning "rampart".