越 - Yue4 - Traverse, Exceed

越 can be used in expressions that match this pattern: 越 X 越 Y. It means roughly the more you X the Y you get. Like 越吃越肥 - Yue4 Chi1 Yue4 Fei2 - The more you eat the fatter you get.

But I looked up this word for a different reason. Toto made us some awesome Bánh cuốn today, and you need 越 to say 越南 - Yue4 Nan2 - Vietnam.