Definition of "lavvy"

It must be great getting up during the night and not having to put a coat on over your jammies to visit the lavvy on the half-landing – especially in the winter when it's below zero.

2011, Robert Douglas, Whose Turn for the Stairs?

When I had to go to the lavvy there I always had to use that stiff, scratchy, smelly, lavvy paper she always said she 'put for the 'young ladies' - sniff'.

2012, Glynis Dunnitt, Hidden History, page 61

Cousin Anna and other traveller kids were playing over by the lavvy, and as I ran to join them, something monumental loomed on my horizon – the lavvy roof

2013, Jess Smith, Sookin' Berries

And she doesn't have to keep going to the lavvy like poor Mr Thomas and Miss Welch and so many of them.

2013, Eileen Dewhurst, Whoever I Am