What does it mean Refill??

Refill some thing means like when something is finished and you put more on it like take this as an example a water bottle you finish drinking a water bottle and you don’t want to get another water bottle so instead you reuse that water bottle and what you do is you put more water on it that’s kind a like what refill me when something is finished and you don’t want to throw it away you put more stuff on it like if a water bottle had water in it and it’s finishing it you were Poliça with water shampoo finish and there’s an extra bottle of shampoo you replace it or you take the shampoo bottle that had the shampoo in it and you were filled it with the Old bottle kind of like that

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