MEANING: noun:
1. A nest.
2. A source or the central point, especially of infection where bacteria or other pathogens breed.

ETYMOLOGY: From Latin nidus (nest). Ultimately from the Indo-European root sed- (to sit), which also gave us nest, sit, chair, saddle, assess, sediment, soot, cathedral, tetrahedron, nidifugous (leaving the nest soon after birth), and nidicolous (remaining with parents). Earliest documented use: 1691.

MID-U.S. - two or three hundred miles on either side of the Mississippi

NIDUC - a Native American tribe of western New Hampshire

NINDUS - a river in Nindia, one of the four great rivers of the middle-east and Nindian subcontinent and a cradle of cnivilization