What is meant by "its pourer" in the hadith where the Prophet (peace be upon him) cursed ten regarding Khamr (wine)?

The aforementioned hadith was narrated by Ahmad and Abd ibn Humayd, and its wording is: "Gabriel came to me and said: 'O Muhammad, Allah Almighty has cursed wine, its presser, its demander of pressing, its drinker, its carrier, the one to whom it is carried, its seller, its buyer, its server, and its demander of serving.'" And "its demander of serving" is he who asks to be served it. It was also narrated with another wording: "Gabriel came to me and said: 'O Muhammad, Allah has cursed wine, its presser, its demander of pressing, its drinker, the one to whom it is carried, its seller, its buyer, its server, and its served.'" Al-Mundhiri said: "It was narrated by Ahmad with a sound chain of narration, and by Ibn Hibban in his Sahih, and Al-Hakim, who said its chain of narration is sound."