Where does “cloverleaf” come from?

cloverleaf (English) comes from English leaf, from Old English Leofa, from Old English lēof, from West Germanic *leub, from Proto-Germanic leubaz, from Proto-Indo-European lewbʰ-, from Proto-Indo-European lēw- — to sound, resound, sing out; to leave.

cloverleaf (English): In the form of the leaf of a clover plant;...

Definitions

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

Ancestry of “cloverleaf”, step by step

cloverleaf traces back through two separate lines of ancestry.

via English leaf

StepLanguageWordMeaning
1EnglishleafThe usually green and flat organ that represents...
2Old EnglishLeofa
3Old Englishlēoflief, dear
4West Germanic*leub
5Proto-Germanicleubazdear, beloved
6Proto-Indo-Europeanlewbʰ-to desire, covet, want; to admire, praise; to...
7Proto-Indo-Europeanlēw-to sound, resound, sing out; to leave

via English clover

StepLanguageWordMeaning
1EnglishcloverA plant of the genus "Trifolium" with leaves...
2Middle Englishclovereclover
3Old Englishclāfre
4Proto-West Germanicklaibrāclover
5Proto-West Germanicklaiwʀā
6Proto-West Germanicklaiw ~ klaiwiʀi
Every word from Proto-Indo-European lēw-