ਆਤਸ਼ (Punjabi) comes from Classical Persian آتش, from Middle Persian ʾthš, from Avestan 𐬁𐬙𐬀𐬭𐬱, from Proto-Iranian ātr-, from Proto-Indo-Iranian ātṛ-, from Proto-Indo-European h₂eh₁ter- — fire.
ਆਤਸ਼ (Punjabi): fire