tweaker

Noun

A person who tweaks something.
A tool, especially a screwdriver, for making small adjustments.
A person addicted to methamphetamine.
A spin bowler.

Origin / Etymology

From tweak + -er; the drug addict sense derives from the slang term tweak for methamphetamines, in reference to the punding behavior of addicts.

Scrabble Score: 14

tweaker: not valid in Scrabble (US) TWL Dictionary
tweaker: not valid in Scrabble (MW) Merriam-Webster Dictionary
tweaker: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 14

tweaker: valid Words With Friends Word