As an historian, Lepore finds the cause of Tea Party well inside her own wheelhouse.
Economic management, Romney likes to say, is his “wheelhouse.”
Your brother, the serial killer of serial killers, is right in your wheelhouse.
1835, "structure enclosing a large wheel," especially one over the steering wheel of a steamboat, thus "pilot house;" from wheel (n.) + house (n.). Baseball slang sense of "a hitter's power zone" attested by 1990.
eighteen-wheeler, four-wheeler, side-wheeler