Where does “ffacbys” come from?

ffacbys (Welsh) comes from Welsh pys, from Middle Welsh pys, from Proto-Brythonic *pɨs, from Latin pīsum, from Ancient Greek πίσον, from Ancient Greek πίσος — pea, pease, seed of "Pisum sativum".

ffacbys (Welsh): chickpeas (Cicer arietinum)

Definitions

chickpeas (Cicer arietinum)

Ancestry of “ffacbys”, step by step

Step	Language	Word	Meaning
1	Welsh	pys	peas
2	Middle Welsh	pys	—
3	Proto-Brythonic	*pɨs	—
4	Latin	pīsum	pea, pease
5	Ancient Greek	πίσον	Quoted by comic poet Alexis; pea, pease, seed of...
6	Ancient Greek	πίσος	pea, pease, seed of "Pisum sativum"

Every word from Ancient Greek πίσος →Every word from Ancient Greek πίσον →Every word from Latin pīsum →