A shallow plastic receptacle that fits over the nipple of a lactating woman to catch any milk that flows.
 Example sentencesExamples
-  If you have not worn breast shells during the last trimester of your pregnancy, it is not too late.
 -  Use breast shells or nipple protectors over tender nipples to stop clothes rubbing and allow air to circulate.
 -  You can use breast shells in your bra to catch leaking milk.
 -  Use of a special breast shell, worn a few months prior to delivery, can help correct this problem.
 -  Simply place the breast shell over the nipple and wear underneath a bra.