Collateral

1. n. Collateral security; that which is pledged or deposited as collateral security.
2. a. Coming from, being on, or directed toward, the side; as, collateral pressure.
3. a. Acting in an indirect way.
4. a. Related to, but not strictly a part of, the main thing or matter under consideration; hence, subordinate; not chief or principal; as, collateral interest; collateral issues.
5. a. Tending toward the same conclusion or result as something else; additional; as, collateral evidence.
6. a. Descending from the same stock or ancestor, but not in the same line or branch or one from the other; — opposed to lineal.
7. n. A collateral relative.

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.