Where does “एरंड” come from?

एरंड (Hindi) comes from Sanskrit एरण्ड, from Dravidian dra, from Proto-Dravidian *cīntu — date palm.

Ancestry of “एरंड”, step by step

StepLanguageWordMeaning
1Sanskritएरण्डcastor oil plant (Ricinus communis)
2Dravidiandra—
3Proto-Dravidian*cīntudate palm
Every word from Proto-Dravidian *cīntu →Every word from Dravidian dra →Every word from Sanskrit एरण्ड →