deadwood

noun8

1. •
   Dead branches or wood on a tree, or coarse woody debris.
2. •
   (figurative) People or things judged to be superfluous to an organization or project.
3. •
   Pins that have fallen and have not been cleared from the alley.
4. •
   Cards in a hand that do not contribute to sets and which are usually counted as points against the player holding the hand.
5. •
   Vertical planks between the keel and the sternpost that act as reinforcement.
6. •
   Structural material on a load-carrying vehicle that reduces the available cargo space.

   • The defendant […] sustained the injuries at Swatzell's switch, by getting his arm caught between the deadwoods of two freight cars […] — 1808
7. •
   Cards that have been discarded.
8. •
   (figurative) Money not realized by exiting a winning pump trade too early.