Plural of dottle; or third-person singular present tense of the verb 'dottle' (if it exists as a verb).
Standard English plural formed by adding '-s' or '-es'; the '-s' suffix for verbs indicates third-person singular present tense.
Dottles as a plural noun might appear in pipe-smoker literature or conversations, but as a verb form, it would be quite rare—this shows how in English, we can theoretically conjugate almost any noun as a verb, though we don't always do it in practice.
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