sheath

vagina, vaginae  N  F     1 1  F   [XXXCX]  
sheath, scabbard;

theca, thecae  N  F     1 1  F   [XXXCO]  
case, box; that which encloses, envelope/cover/hull/sheath (L+S); vagina;

fodorus, fodori  N  M     2 1  M   [FWXFY]  
sheath;

fodrus, fodri  N  M     2 1  M   [FWXFY]  
sheath;

catillus, catilli  N  M     2 1  M   [XXXCO]  
bowl, dish; ornament on sword sheath (L+S); upper millstone;

catillum, catilli  N  N     2 2  N   [XXXCO]  
bowl, dish; ornament on sword sheath (L+S); upper millstone;