这句话肯定有错,应改为:What does it mean?does,was 一般不缩写为s,只有is和has缩写为s.前面用了助动词does,mean 当然用原形了.)
带有mean、表示问“这是什么意思”的说法有：
1.what does it mean?（即 What does ...mean?）
2.what's the meaning?（meaning 用作动名词）
3.what do you mean (by it)?（即What do you mean by ...)
如表示“pants这个词是什么意思?”可表示为：
What does "pants" mean?
What is the meaning of "pants"?
What do you mean by "pants"?