Another troublesome word

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The last entry prompted me to write this. I've been wondering about a particular word for some time, in fact I'm not even sure it exists. I've tried looking in dictionaries, but my problem is I've never seen the word written down. My professor (in an elementary class, if that helps give context) would say this word while we were doing speaking exercises, one person answering her questions at a time, that sort of thing.

I'm no IPA expert, so the closest phonetic description I can give is: dye-sha. If I had to guess at a spelling, I'd say дайша but like I said, haven't been able to find trace of it anywhere. It's possible I misheard it over and over, but I'm really curious to see what it means (if anything) or what the true word is. On an additional level, I invented a character for a novel called Daisha, which is what originally pricked my ears to the word. ^^

I'm going to hope it isn't a curse word, as it was said almost every day in class. ;)