Noun
mini roundabout (plural mini roundabouts)
Alternative form of mini-roundabout
mini-roundabout (plural mini-roundabouts)
(UK) A small roundabout that is either flush to the road surface (painted on) or slightly raised.
mini-roundabout
Below this minimum size, the mini-roundabout prevails. Source: Internet
Mini-roundabouts are sometimes grouped in pairs (a double mini-roundabout) or in "chains", simplifying navigation of otherwise awkward junctions. Source: Internet