An alternate plural form of cloverleaf, though 'cloverleafs' is more common in modern usage.
From clover + leaves (the standard English plural form). This variant pluralization reflects older or alternative grammatical preferences where compound nouns use the natural plural of the second element.
English doesn't always agree with itself on plurals! Both 'cloverleafs' and 'cloverleaves' exist, showing how language evolves—sometimes we pick the easiest way to say something, and it becomes standard.
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