Connascency

1. n. The act of growing together.
2. n. The common birth of two or more at the same tome; production of two or more together.
3. n. That which is born or produced with another.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.