sheugh

Etymology
From, from.

Noun

 * 1)  A ditch, especially a field boundary ditch usually used to drain fields and mark their boundaries.
 * 2)  The space between the buttocks.
 * The sweat is running down the sheugh of my arse.
 * 1)  The Atlantic Ocean; the sea. The Irish Sea is the "little  sheugh,the Atlantic is the big sheugh. Which also says something about the N. Irish attitude towards the countries on either side of the sheugh.