dottle noun
1 the half-burnt piece of tobacco remaining in a pipe 20-.
2 dregs, what’s left over 19-.
3 a small particle of something 19-.
4 a stopper for a bottle, a cork, a bung 20-. etymology: Scots ‘a particle, jot, something small’; diminutive of English dot ‘a small lump or spot’; attested by BW; senses 3 and 4 attested by BS in TDITA