culasse betyder på engelska

breech [breeches]▼◼◼◼(part of a cannon or other firearm)
noun
[UK: briːtʃ] [US: ˈbriːtʃ]

cylinder head▼◼◼◼(part of an internal combustion engine)
noun
[UK: ˈsɪ.lɪn.də(r) hed] [US: ˈsɪ.lən.dər ˈhed]