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.

jbovlaste

In notes:

ganxo: x₁ is a/the anus/anal orifice/asshole/arsehole [body-part] of x₂; [metaphor: exit, waste exit].
mabla: x₁ is execrable/deplorable/wretched/shitty/awful/rotten/miserable/contemptible/crappy/inferior/low-quality in property x₂ by standard x₃; x₁ stinks/sucks in aspect x₂ according to x₃.
gaxmolgle: gl₁ rims/performs anilingus on gl₂.
zagvi'agau: x₁ shows their butt to/moons x₂
klo'aka: x₁ is a cloaca of x₂.