refills, refilling, refilled
(The verb is pronounced [[t]ri͟ːfɪ̱l[/t]]. The noun is pronounced [[t]ri͟ːfɪl[/t]].)
1) VERB If you refill something, you fill it again after it has been emptied.

[V n] I refilled our wine glasses.

Refill is also a noun. [INFORMAL]

Max held out his cup for a refill.

2) N-COUNT A refill of a particular product, such as soap powder, is a quantity of that product sold in a cheaper container than the one it is usually sold in. You use a refill to fill the more permanent container when it is empty.

Refill packs are cheaper and lighter.

English dictionary. 2008.