Where does “gall” come from?

gall (Middle Irish) comes from Old Irish gall, from Latin Gallus, from Latin pāvō, from Ancient Greek ταώς — peacock; type of fish.

gall (Middle Irish): foreigner

Definitions

Step	Language	Word	Meaning
1	Old Irish	gall	foreigner; rock, pillar
2	Latin	Gallus	Alternative letter-case form of gallus; Gaul;...
3	Latin	pāvō	peacock, peafowl; a bird associated with Argus and sacred to Hera or Juno; eaten as a delicacy
4	Ancient Greek	ταώς	peacock; type of fish