What is "refills"

Usage examples of "refills".

I waited with stifled impatience while he arranged for refills, but at length the source of all explanations agreed that yes, the top men, about five of them, had taken it in turns to stand guard over the hut, only actually they had sat on a chair in the doorway with a gun across their knees, and that had gone on for about a week, until the fishing boat arrived and took everyone to Cayman.