Hán-Nôm character 𪶩

𪶩 is a rare Vietnamese Hán-Nôm character recorded for dãi, a word for saliva and part of phrases about exposure to sun or weather. Hán-Nôm is the traditional Vietnamese practice of writing with Chinese and locally created characters. Unicode traces its source to Vietnam’s Hán Nôm Coded Character Repertoire (2007); that dates the catalog entry, not the character’s first use. The surrounding phrase tells you which sense is meant.