A Quarterland or Ceathramh (Scottish Gaelic) was a Scottish land measurement. It was used mainly in the west and north. It was supposed to be equivalent to eight fourpennylands, roughly equivalent to a quarter of a markland. However, in Islay, a quarterland was equivalent to a quarter of an ounceland. Half of a quarterland would be an ochdamh(ie.one-eighth), and in Islay a quarter of a quarterland a leothras(ie.one-sixteenth). The name appears in many Scottish placenames, notably Kirriemuir.