pilka -pil-pi'a- gismu

x1 is a crust/rind/peel/skin/hide/outer cover of x2.

(cf. grute, calku, skapi (pilka as a general term includes skapi), gacri)


In notes:

calku
x1 is a shell/husk [hard, protective covering] around x2 composed of x3.
gacri
x1 is a cover/[lid/top] for covering/concealing/sheltering x2.
grute
x1 is a fruit [body-part] of species x2.
skapi
x1 is a pelt/skin/hide/leather from x2.
gutrypilcri
c1=g2=p2 menstruates.
kapkevna
k1 is a skin pore of pelt/skin/hide/leather k2=s1 from x3=s2.
korsenta
s1=k1 is a cortex (outermost layer) of structure s3=k2.
rutpiljdu
j1 is a quantity of marmalade made from fruit g1 of species g2.
selpi'a
x1 (inner/core "stuff") has outer layer/crust/rind/peel/skin/hide x2.
arpi
x1 is a scar on x2
sepkili
x1 is a freckle on x2
snitatu
x1 is a tattoo