Where does “volleille” come from?

volleille (Old French) comes from Late Latin volatilia, from Latin volātilis, from Latin -ilis, from Proto-Italic -elis, from Proto-Indo-European -elis, from Proto-Indo-European -lós — Forms agent nouns from verbal roots.

Ancestry of “volleille”, step by step

Step	Language	Word	Meaning
1	Late Latin	volatilia	nominative neuter plural of volātilis; accusative...
2	Latin	volātilis	flying, winged
3	Latin	-ilis	-ile
4	Proto-Italic	-elis	—
5	Proto-Indo-European	-elis	—
6	Proto-Indo-European	-lós	Forms agent nouns from verbal roots

Every word from Proto-Indo-European -lós →Every word from Latin -ilis →Every word from Latin volātilis →