fronde

foliage; frond

Borrowed from Latin frondem (“leafage”). The dated sense is from Classical Latin, and attested since the fifteenth century; the other is from scientific Latin, due to Carolus Linnaeus, and attested since the eighteenth century.

sling, slingshot; criticism, opposition

Ultimately from Latin funda (“sling, slingshot”), probably through a Vulgar Latin *fundula, and a contracted, metathesized derivative *flunda (compare Italian fionda).