crazy paving 
noun [mass noun] British
Paving made of irregular pieces of flat stone: [as modifier]: a crazy-paving patio...
- He said the gang has been vandalising benches and smashing stones from crazy-paving walkways in the historic cemetery most nights from 5pm.
- A decision to grass over a popular crazy-paving pathway has been branded ‘beyond a joke’.
- I built the dividing walls and even laid crazy paving.
- rough-grind
- rough grinder
- rough-ground
- roughhead
- rough-headed poppy
- rough-hew
- rough-hewn
- rough horsetail
- rough hound
- roughhouse
- roughie
- rough-in
- roughing
- roughing pump
- roughings
- roughish
- roughit
- rough justice
- rough knot
- rough-leaved
- rough-legged
- rough-legged buzzard
- rough-legged hawk
- rough lemon
- rough lock