The charred residue or ash left in the bowl of a pipe after smoking.
From Middle Dutch 'dottel' or German 'dötel,' possibly related to 'dot' (a lump). The term appears in tobacco-smoking vocabulary since the 17th century.
Pipe smokers have their own rich vocabulary—'dottel' is what you knock out of your pipe bowl, and different cultures have different names for this same tobacco residue.
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