cloverleaf

Short definition from Wiktionary

Adjective

1. 1
   In the form of the leaf of a clover plant; cloverleafed.

Noun

1. 1
   The leaf of a clover plant.
2. 2
   (with plural cloverleafs or cloverleaves) Ellipsis of cloverleaf interchange.

Verb

1. 1
   To turn by following a cloverleaf, or as if by following one.