dregs of wine
醨 centers on the leftover sediment or dregs that settle in wine, representing the impure or leftover part of a liquid.
醨 combines 酉 (wine jar) with 离, which likely contributes the sound and may relate to separation or leaving behind, suggesting the dregs that separate from the wine.
The wine jar 酉 on the left holds the liquid, while the right side 离 looks like something left behind. Picture the dregs settling at the bottom of the jar after the clear wine is poured off.
For リ, imagine the dregs being re-leased from the wine: re- -> リ, as the sediment is left behind.
weak sake; unrefined sake