balni -baln- gismu

x1 is a balcony/overhang/ledge/shelf of building/structure x2.

See also kajna.

In notes:

barku'a
x1 is a porch (veranda, outdoor room) attached to building x2.
bartsina
x1 is a deck of building/structure x2.
kajna
x1 is a shelf/counter/bar in/on/attached to supporting object x2, for purpose x3.
ricybalni
b1 is the canopy of tree b2=t1 of species t2.