wheelhouse >> ˈwiːlhaʊs
Definition: [noun] a part of a boat or ship serving as a shelter for the person at the wheel.
Definition: [noun] one's area of interest or expertise.
Example: as the campaign swings to the south, that should be right in his wheelhouse
Definition: [noun] the part of a batter's strike zone most likely to produce a home run.
Example: Oakland's closer Street left a fastball in Bonds' wheelhouse with two outs
Definition: [noun] a stone-built circular house with inner partition walls radiating like the spokes of a wheel, found in western and northern Scotland and dating chiefly from about 100 BC to AD 100.