Read the dictionary definition of refill. All definitions for this word.
1. a commercial product that refills a container with its appropriate contents
1. he got a refill for his ball-point pen
2. he got a refill for his notebook
2. a prescription drug that is provided again
1. he got a refill of his prescription
2. the prescription specified only one refill
3. fill something that had previously been emptied
1. refill my glass, please