Collateral

Part of speech: noun (n.)

1. A collateral relative. Ayliffe.

2. Collateral security; that which is pledged or deposited as collateral security.

Part of speech: adjective (a.)

1. Coming from, being on, or directed toward, the side; as, collateral pressure. "Collateral light." Shak.

2. Acting in an indirect way. If by direct or by collateral hand They find us touched, we will our kingdom give . . . To you in satisfaction. Shak.

3. 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. That he [Attebury] was altogether in the wrong on the main question, and on all the collateral questions springing out of it, . . . is true. Macaulay.

4. Tending toward the same conclusion or result as something else; additional; as, collateral evidence. Yet the attempt may give Collateral interest to this homely tale. Wordsworth.

5. Descending from the same stock or ancestor, but not in the same line or branch or one from the other; -- opposed to lineal.