Loncha = pickle in Marathi (state of Maharashtra).
I’ve never seen it transliterated with an S (LonSa) though the pronunciation of the “ch” is more a “ts” (tongue front behind teeth) than “ch” (tongue back).
There’s a different word for pickle in every indian language, and ingredients vary slightly but the method is usually similar.
Achaar in Hindi is the best known term — eg Brooklyn Delhi’s Tomato version. Also where Achaat in SE Asia derives from. And Amba in the levant comes from the word for mango — they dropped the word for pickle from the mango pickle 
.
