Please look it up in the dictionary when you don't know the m___ of the world.
问题描述：
Please look it up in the dictionary when you don't know the m___ of the world.
答
应该用meaning，表示“含义，意思”。
Please look it up in the dictionary when you don't know the meanning___ of the word.
句子的意思是：
如果你不知道单词的意思，就查字典。
答
meaning
如果你不知道这个单词的意思,请查词典