dot·tle 
(dŏtl)
(dŏtl)n.
The plug of tobacco ash left in the bowl of a pipe after it has been smoked.
[From DOT1, lump (obsolete).]
- transponder
- transpontine
- transport
- transportability
- transportable
- transportation
- transporter
- transportive
- transposable
- transpose
- transposition
- transpositional
- transposon
- transracial
- transsexual
- transship
- transshipment
- transthoracic
- transthoracically
- transubstantiate
- transubstantiation
- transubstantiationalist
- transudate
- transudation
- transudatory