おっちゃん

uncle; middle-aged man

Word type: 

Standard: 

おじさん

Standard kanji: 

叔父さん

Example: 

おっちゃん、これなんぼ?
Hey grampa, how much is this?

Commentary: 

This phrase is often used when calling for somebody or getting their attention. It should usually be used only with people you have a little history with. It can also be used with family members.

The female counterpart of おっちゃん is おばちゃん.

Also see おっさん.