Cloverleaf (noun)

A design resembling a four-leaf clover, especially one used as a road intersection with three circular ramps.

Origin:

Middle english clovelef, from clove + leef, leaf.

Examples:

1. The cloverleaf interchange made it easy to get from the highway to the airport.
2. The cloverleaf design allows for smooth and efficient merging of traffic.
3. The new cloverleaf was constructed to reduce congestion and improve safety.
4. I always get lost trying to navigate the cloverleaf near my house.
5. The cloverleaf was a popular design for interchanges in the mid-20th century.