refill (Noun) — A prescription drug that is provided again. ex. "he got a refill of his prescription" ex. "the prescription specified only one refill"
refill (Noun) — A commercial product that refills a container with its appropriate contents. ex. "he got a refill for his ball-point pen" ex. "he got a refill for his notebook"
refill (Verb) — Fill something that had previously been emptied. ex. "refill my glass, please"