calku -cak- gismu

x1 is a shell/husk [hard, protective covering] around x2 composed of x3.

See also pilka, skapi, gacri, bartu.


In notes:

bartu
x1 is on the outside of x2; x1 is exterior to x2.
gacri
x1 is a cover/[lid/top] for covering/concealing/sheltering x2.
korka
x1 is a quantity of/contains/is made of cork/bark from tree/species x2; [material].
pilka
x1 is a crust/rind/peel/skin/hide/outer cover of x2.
skapi
x1 is a pelt/skin/hide/leather from x2.
badgai
g1 is a protective cover for b2=g2 against b3.
cakyjukni
j1 is a crustacean of species/class j2.
gaimra
m1=g1 is a cover/[lid/top] for sheltering m2=g2 from danger/threat m3.
selcalku
x2=c1 is a shell/husk/hard, protective covering around x1=c2 composed of x3=c3.
tercalku
x3=c1 is a shell/husk/hard, protective covering around x2=c2 composed of x1=c3.