Alternative spelling of 割殻 (“skeleton shrimp”)

Kyūjitai form of 内殻 (“inner shell”)

(chemistry) inner shell (a set of atomic orbitals with a relatively low principal quantum number)

external shell

a Japanese cockle, an egg cockle: an edible marine bivalve mollusc of family Cardiidae, species Fulvia mutica

Kyūjitai form of 貝殻: shell; seashell

a Triton's trumpet (Charonia tritonis) shell used in ancient times as a horn to signal troop movements

kai-awase (a Heian period game involving matching two pieces of a clamshell) / (slang) tribadism

shell money; cowry currency

cone snail, cone shell (Conidae)