mudslide /ˈmʌdˌslaɪd/ noun2 •A geological event in which viscous mud flows down an incline.A mudslide in the south-western province of Guizhou has resulted in 15 deaths. Thirty people are still missing as the search continues. — 2019 •A mixed drink consisting of vodka, Kahlúa and Baileys. formsmudslides