Where does “guitarra” come from?

guitarra (Old Spanish) comes from Arabic قِيثَارَة, from Latin cithara, from Ancient Greek κιθάρα — lyre; the ribs of the horse; ivy.

Ancestry of “guitarra”, step by step

Step	Language	Word	Meaning
1	Arabic	قِيثَارَة	—
2	Latin	cithara	cithara, lyre, lute, guitar; guitar
3	Ancient Greek	κιθάρα	lyre; the ribs of the horse; ivy