chambered nautilus
argonauta
nautili
paper
paper nautilus
tetrabranchiata
U-boat
cephalopod
cephalopod mollusk
octopod
pigboat
sub
submarine
carpenters'
cochlear
cowrie
delicatest
drinking-horn
fingerboard
geniculate
metaphoric
milk-teeth
ormer
safo
snail-like
spheroidal
thirteen-inch
unnoticeable
wirebound