Where does “ਅਝੁ” come from?

ਅਝੁ (Old Punjabi) comes from Prakrit 𑀅𑀁𑀲𑀼, from Sanskrit अश्रु, from Proto-Indo-Aryan Háśru, from Proto-Indo-Iranian Háćru, from Proto-Indo-European h₂éḱru, from Proto-Indo-European dáḱru, from Proto-Indo-European dh₂éḱru.

Ancestry of “ਅਝੁ”, step by step

StepLanguageWordMeaning
1Prakrit𑀅𑀁𑀲𑀼tear drop of clear salty liquid from the eyes
2Sanskritअश्रुtear
3Proto-Indo-AryanHáśru—
4Proto-Indo-IranianHáćrutear
5Proto-Indo-Europeanh₂éḱrutear
6Proto-Indo-Europeandáḱrutear
7Proto-Indo-Europeandh₂éḱru—
Every word from Proto-Indo-European dh₂éḱru →Every word from Proto-Indo-European dáḱru →Every word from Proto-Indo-European h₂éḱru →