n. pl. Gladii .
[L., a sword.]
(Zoöl.) The internal shell, or pen, of cephalopods like the squids.
Webster 1913 Dictionary edited by Patrick J. Cassidy
Match: Gladius
and others.
Webster's 1913 (1 of 3 sources)
Gla·di·us
n. pl. Gladii .
n. pl. Gladii .
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