What exactly do you mean by...

Meaning

Requesting precise definition.

Examples

• John: The report needs 'urgent' attention.
• Alice: What constitutes 'urgent' in this case?
• John: <b>What exactly do you mean by</b> 'urgent'? Does it need to be done immediately?
• Alice: Yes, <b>what exactly do you mean by</b> 'urgent'? Does it mean it has to be finished today?