cloverleaf

apilanlehtiristeys In the form of the leaf of a clover plant; cloverleafed.
(with plural cloverleaves) The leaf of a clover plant
puhekieltä (with plural cloverleafs or cloverleaves) A cloverleaf interchange.
puhekieltä To turn by following a cloverleaf, or as if by following one.
2003, David Maraniss, They Marched Into Sunlight: War and Peace, Vietnam and America, October 1967,

Hay told a military historian that Allen precipitated “the debacle” by “allowing his lead company to pursue the VC down the trail” instead of forming a perimeter and cloverleafing at the first sign of the enemy.