1. A coward.
2. Cowardly; contemptibly timid; pusillanimous.
3. To act cowardly.
EX. Poor Luigi is always depicting as being the craven brother of the Super Mario Bros-- always the first to run and panic at the first sign of danger while Mario faces most challenges head on-- and really he does deserve a little better.
Here are some of the honorable mentions for this year's Halloween: