Where does “aplucusescu” come from?

aplucusescu (Aromanian) comes from Greek πλακώνω, from Byzantine Greek πλακώνω, from Ancient Greek πλακῶ, from Ancient Greek πλάξ, from Proto-Hellenic pləks, from Proto-Indo-European pleh₂- — flat.

Ancestry of “aplucusescu”, step by step

Step	Language	Word	Meaning
1	Greek	πλακώνω	fall down on, crash down, come down on; fall,...
2	Byzantine Greek	πλακώνω	—
3	Ancient Greek	πλακῶ	to coat with marble
4	Ancient Greek	πλάξ	anything flat and broad
5	Proto-Hellenic	pləks	—
6	Proto-Indo-European	pleh₂-	flat

Every word from Proto-Indo-European pleh₂- →Every word from Proto-Hellenic pləks →Every word from Ancient Greek πλάξ →