short name for Guangxi province
灕 is a rare kanji used as a short name for Guangxi province. Its standalone meaning is unclear outside that proper-name context.
灕 combines 氵 (water) with 離, which likely contributes the sound. The exact historical development is uncertain.
The water radical 氵 beside 離 can be remembered as the river Li (漓江) in Guangxi, which the kanji names.
For リ, imagine the Li River (漓江) flowing through Guangxi: Li -> リ, and the water radical 氵 reinforces the river connection.