LORICA
lorica
(noun) a hard protective sheath (as secreted by certain protoctists, for example)
Source: WordNet® 3.1
Etymology
Noun
lorica (plural loricae)
(historical) A cuirass, originally of leather, afterward of plates of metal or horn sewed on linen or the like.
(chemistry, obsolete) Lute for protecting vessels from the fire.
(zoology) The protective case or shell of a Loricifera, infusorian or rotifer
Source: Wiktionary
Lo*ri"ca, n.; pl. Loricæ. Etym: [L., lit., a corselet of thongs, fr.
lorum thong.]
1. (Anc. Armor)
Definition: A cuirass, originally of leather, afterward of plates of metal
or horn sewed on linen or the like.
2. (Chem.)
Definition: Lute for protecting vessels from the fire.
3. (Zoöl.)
Definition: The protective case or shell of an infusorian or rotifer.
Source: Webster’s Unabridged Dictionary 1913 Edition