from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. colleague ("sister" in the same craft, occupation, or society)
- n. One's husband's brother's wife.
co- + sister (Wiktionary)
My co-sister used to do the same way, but mix the dough like dosa batter and do dosas and fill it up just like as u do for spring rolls and toast it on tawa for less fat.