A highway interchange of which two highways, one crossing-over another, have a few entrance and exit ramps resembling the outline of a four-leaf clover and allowing vehicles to proceed in a choice of direction on either highway.
The leaf of a clover plant
(with plural cloverleafs or cloverleaves) A cloverleaf interchange.
a highway interchange between two roads where the connecting road pattern resembles a four-leaf clover, and makes it possible for going from one road to a different without left-hand turns. One roadway passes within the various other, therefore the exit from a single highway and entrance to the 2nd highway proceeds from the right-hand lane everywhere.
The leaf of clover; a trefoil.
an interchange that doesn't require left-hand turns