again a Dublin knacker/scumbag/scanger!!
Usually a young person or even a kid i.e. an apprentice in knackerness!!! ;)
The word comes from French 'guerrier' which means warrior!
A ‘gurrier’ is an ill-mannered, loutish person; perhaps one who eats ‘gur-cake’ – scraps of fruit cake in hard pastry, favoured by poor children in Dublin.