The davoch, davach or daugh is an ancient Scottish land measurement. All of these terms are cognate with modern Scottish Gaelic dabhach. The word dabh or damh means an "ox" (cf. oxgang, damh-imir), but dabhach can also refer to a "tub", so may indicate productivity. It was called the arachor in the Lennox. Watson, in The Placenames of Ross & Cromarty, says, “usually four ploughgates”. Skene in Celtic Scotland says: The pennyland is thought to be of Norse origin, so it is possible that Norse and native systems were conflated in the west. Prof. MacKinnon in Place and Personal Names of Argyll says,