wheel·house 
(wēlhous′, hwēl-)
(wēlhous′, hwēl-)n.
Idiom: See pilothouse.
in (one's) wheelhouse
1. In the area of one's greatest striking power: a fastball that was right in the batter's wheelhouse.
2. In line with one's interests or abilities: a movie script that is right in that actor's wheelhouse.
- Fourier analysis
- Fourierism
- Fourierist
- Fourierite
- Fourier series
- Fourier transform
- four-in-hand
- four-leaf clover
- four-letter word
- four-o'clock
- four-peat
- fourpenny nail
- fourplex
- four-poster
- fourragère
- fourscore
- foursome
- foursquare
- foursquarely
- four-star
- fourteen
- fourteenth
- fourth
- fourth dimension
- fourth estate