shell sac
simple past tense of go to the toilet
Of or relating to these people or their languages. / (linguistics, historical) Belonging to a proposed Native American language family associated with these people.
(Scotland) A tool; an implement.
(zoology) The sac in which the shell of a mollusc is secreted during development; (now especially) the fold of mantle in which a cephalopod secretes its pen or gladius.
幼生期に、軟体動物の殻嚢は炭酸カルシウムの層を分泌して保護殻を形成する。
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