1) Egg container 2) Egg holder of a sort 3) Egg pouch 4) Egg receptacle 5) Insect egg depository 6) Ootheca 
• (n.) A Graafian follicle; any sac containing an ovum or ova. • (n.) The inner layer of the fibrous wall of a Graafian follicle.
External sac attached to the somite that bears openings of gonoducts in females of many Copepoda; fertilised eggs pass into the ovisacs for embryonation.
O'vi·sac noun [ Ov um + sac .] (Anat) (a) A Graafian follicle; any sac containing an ovum or ova. (b) The inner layer of the fibrous wall of a Graafian follicle. 
A waxen sac into which eggs are laid in Coccoid Hemiptera, and which sometimes encloses all or part of the female.
a sac or capsule containing an ovum or ova.