Before I answer your question I need to say that your question should be expressed as follows:
"Are there any other expressions with the same meaning of "What is the meanning of"?"
Actually there are other expressions,Such as:
What does...mean?
What do you mean by...
Would you like to explain...for me?
But I believe the original "what's the meaning of" is the most frequently used expression when asking for explanation.
必须先澄清问题比较地道的说法是
"Are there any other expressions with the same meaning of "What is the meanning of"?"
可用的表达很多.如下：
What does...mean?
What do you mean by...
Would you like to explain...for me?
等等.
但是个人认为问题里那句是最常用的.