1) boruni (#); 2) borun (#)
1) Outer; being on the outer side; situated or being outside,
which is outside.
From L. exterior "outward, outer, exterior," comparative of exterus "on the outside, outward, outer, foreign," itself a comparative of → ex- "out of."
Boruni, from borun, variant of birun "out, the outside," → out.
Fr.: angle extérieur
1) Any of the four angles that do not include a region of the space between
two lines intersected by a third straight line