doutPronunciation: /daʊt/ (also dowt) chiefly ScottishDefinition of dout verb [with object] extinguish (a fire or light): he sent her and Peter back to dout the fire noun a cigarette end: he inserts the dout off-centre between his lipsOrigin: early 16th century (as a verb): contraction of do out. The noun dates from the 1940s