zargu -zag-za'u- gismu

x1 is a/the buttock(s)/arse/rear/seat [body-part] of x2; [metaphor: rounded surface, support].

Also ass, behind, butt. See also ganxo, mabla.


In notes:

ganxo
x1 is a/the anus/anal orifice/asshole/arsehole [body-part] of x2; [metaphor: exit, waste exit].
gaxmolgle
gl1 rims/performs anilingus on gl2.
zagvi'agau
x1 shows their butt to/moons x2
klo'aka
x1 is a cloaca of x2.