moklu -mol-mo'u- gismu

x₁ is a/the mouth/oral cavity [body-part] of x₂; (metaphor: entrance/intake for consumption).

(adjective:) x₁ is oral. See also ctebi, denci, tance.

In notes:

ctebi: x₁ is a/the lip [body-part]/rim of orifice x₂ of body x₃; (adjective:) x₁ is labial.
denci: x₁ is a/the tooth [body-part] of x₂; (adjective:) x₁ is dental.
tance: x₁ is a/the tongue [body-part] of x₂; (metaphor: similar to nazbi, tamji, degji).
molgai: g₁ is a muzzle on m₂
molgapru: g₁ is the palate of m₂.
molku'o: m₁=s₁ is a philtrum (infranasal depression) of m₂=s₂.
moltenva'u: x₁=v₁ yawns/[breathes while stretching mouth]