“几万”的意思是好几个一万，也就是数量很大的钱或东西。

The meaning of "几万" is several ten-thousands, that is, a large amount of money or things.

这个词常常用来说钱很多，比如买东西要花几万块。

This word is often used to say there is a lot of money, for example, buying something costs several ten-thousands of yuan.