narge -nag- gismu

x1 is a nut [body-part: hard-shelled fruit] from plant/species x2 with shell x3 and kernel x4.

Also x4 nucleus, center (= velnarge for place reordering). See also grute, stagi, jbari, midju.

In notes:

grute
x1 is a fruit [body-part] of species x2.
jbari
x1 is a berry (fruit/plant) of plant/species x2.
stagi
x1 is the edible x2 portion of plant x3; x1 is a vegetable.
palma
x1 is a palm tree (Palmae/Arecaceae) of species x2
jglandi
x1 is a walnut of species x2.