selkä (englanniksi)

back (s: ruumiin takaosa / anatomy / anatomy)
ridge (s: anatomy)
spine (s: anatomy / line or area on a mountain or hill from which one can descend to at least two separate directions / anatomy / the side where the pages are bound together)
watershed area (s: anatomy)
open water (s: anatomy / expanse of sea or large lake which is distant from shore and devoid of nearby islands or other obstructions)