Rood (unit)
A rood (; abbreviation: ro) is a historic English and international inch-pound measure of area, as well as an archaic English measure of length. == Etymology == Rood is an archaic word for "pole", from Old English rōd "pole", specifically "cross", from Proto-Germanic *rodo, cognate to Old Saxon rōda, Old High German ruoda "rod"; the relation of rood to rod, from Old English rodd "pole", is unclear; the latter was perhaps influenced by Old Norse rudda "club".