Where does “गुरुकुल” come from?

गुरुकुल (Hindi) comes from Sanskrit गुरुकुल, from Sanskrit गुरु, from Proto-Indo-Aryan gr̥Húṣ, from Proto-Indo-Iranian gr̥Húš, from Proto-Indo-European gʷréh₂us, from Proto-Indo-European -us — Forms adjectives from Caland system roots.

गुरुकुल (Hindi): gurukula

Definitions

gurukula

Ancestry of “गुरुकुल”, step by step

Step	Language	Word	Meaning
1	Sanskrit	गुरुकुल	the house of a Guru MBh. i, ch. 3 Pāṇ. 2-1, 42...
2	Sanskrit	गुरु	heavy; weighty
3	Proto-Indo-Aryan	gr̥Húṣ	—
4	Proto-Indo-Iranian	gr̥Húš	heavy
5	Proto-Indo-European	gʷréh₂us	heavy
6	Proto-Indo-European	-us	Forms adjectives from Caland system roots

Every word from Proto-Indo-European -us →Every word from Proto-Indo-European gʷréh₂us →Every word from Proto-Indo-Iranian gr̥Húš →