Eid
- also found in the Northern Isles and derived from Old Norse, this term may be used either for an isthmus or a narrow neck of land jutting out into the sea. It can also refer to a sandbank cast up across the head of a bay. Jakob Jakobsen's Etymological Dictionary of the Norn Language in Shetland (1928–32) explains that in place-names eid is quite often compounded with Old Norse mæf 'slender', giving rise to forms such as Mæfeid or Mæveid, as found in early spellings of the parish-name Northmavine.