Before revision: "goatskin coat", from treating the word as meaning "something grammatically feminine pertaining to goat": Greek aix (stem aig-) = "goat" , + suffix -is (stem -id-).
After revision: "goatskin coat" from treating the word as meaning "something grammatically feminine pertaining to goat": Greek aix (stem aig-) = "goat" , + suffix -is (stem -id-).