órka (Kashubian) comes from Polish orka, from Polish orać, from Proto-Slavic oràti, from Proto-Balto-Slavic árˀtei, from Proto-Indo-European h₂éryeti, from Proto-Indo-European h₂erh₃-, from Proto-Indo-European h₁er- — earth.
órka (Kashubian): orca (Orcinus orca)