ganxo -gax- gismu

x1 is a/the anus/anal orifice/asshole/arsehole [body-part] of x2; [metaphor: exit, waste exit].

Also asshole/ass/arsehole; (adjective:) x1 is anal. See also zargu, kalci, mabla, rinci.


In notes:

kalci
x1 is a/the feces/excrement/dung/shit of x2 (animal/person); (adjective:) x1 is fecal (matter).
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.
rinci
x1 liquid/fluid drains/strains/flushes from source x2 through drain/strainer x3 by force x4.
zargu
x1 is a/the buttock(s)/arse/rear/seat [body-part] of x2; [metaphor: rounded surface, support].
gaxlumple
p1 is toilet paper.