ˈnīdəs noun
( plural ni·di -ˌdī ; or ni·dus·es )
Etymology: New Latin, from Latin, nest
1. : a nest for the eggs of insects, spiders, small animals
2.
a. : a breeding place ; especially : a place or substance in an animal or plant where the germs of a disease or other organisms lodge and multiply
b. : a place of development for spores or seeds
c. : a group of regenerative epithelial cells of the insect ventriculus
3.
a. : a place where something originates or is fostered or develops
hysterical symptoms often grow from an organic nidus , congenital or acquired — D.N.Parfitt
b. : a place where something is settled, lodged, or located