What do you mean fill?

What do you mean fill is a question asking for definition of fill, which is common English verb and sometimes noun. Fill as verb means to make something full by adding contents until it is full, such as fill a glass with water, fill a bucket, or fill a room with people. It means to occupy space completely or to supply what is missing to complete something. For example, fill a vacancy means take a job position, fill an order means supply what was ordered, fill a form means write information in blank spaces. Fill can also mean to pervade, as in music fills the room. As noun, fill can mean material used to fill a hole, like landfill, or an amount sufficient to satisfy hunger, as in eat your fill. In phrasal verbs, fill in means provide information or substitute, fill out means complete or become rounder, fill up means become completely full. So when you ask what do you mean fill, answer is fill means to make full, to complete, to occupy, or to satisfy, depending on sentence. It is action that results in fullness, not the state of being full itself.