The Word of the Day comes from "THE FIFTH SEASON" by Philip Salom. It is longlisted for the 2021 Miles Franklin Award.
SYNAESTHESIA
Synaesthesia is a neurological trait or condition that results in a joining or merging of senses that aren't normally connected. The stimulation of one sense causes an involuntary reaction in one or more of the other senses. For example, someone with synaesthesia may hear colour or see sound.