sheugh

noun3

1. •
   (Ireland, Scotland) A ditch, especially a field boundary ditch usually used to drain fields and mark their boundaries.
2. •
   (Ireland, informal) The Atlantic Ocean; the sea.

   • The Irish Sea is the little sheugh, the Atlantic is the big sheugh.
3. •
   (Scotland, informal) The space between the buttocks.

   • The sweat is running down the sheugh of my arse.