On gloss:

xedja
x1 is a/the jaw [body-part] of x2.
cinzyxadji in sense "body part (emphasizes grasping ability)"
x1 is a pincer/mandible/jaw/grasping body part of x2 which is primarily comprised of two major parts which move relative to one another via scissor actions but which otherwise has little dexterity or mobility

In definition:

dzixe'a
x1 is a/the lower jaw of x2.
ja'urxe'a
j1=x1 is a/the beak/talon-like jaw (body part) of j2=x2.

In notes:

vokpravelpe'u
x1=p4 is the locus/place of (vocal) articulation of sound/vocal product x2=v1=c2 made by instrument/locus/vocalization tool x3=p3 in individual speaker x4=v2=c1=p1
zbijoimolpunli
x1 is the snout/muzzle (body-part) of x2.