Top definition
Brother-in-law in Tamil. The word is used to informally used to greet a friend who is usually a guy. Most often than not, the friend is usually unrelated but the word Matchaa is used anyway. It is synonymous to "Bro", which is also used to greet another friend who may or may not be related.
Let's go for a drink Matchaa.

How's your work Matchaa.

Damn, I think I am broke this month Matchaa.

Matchaa, do you think today is a good day for a drink ?
by Emak Kamu February 11, 2010
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