engine room

noun

1. A compartment on a ship in which the engine machinery is located.
2. The engine compartment of a diesel locomotive.

   “For rigidity, two bulkheads are provided which are welded to the sides and underframe and which separate the cabs from the engine room.”

3. The source of power in a team or other group.

   “When I look at what is going wrong for Liverpool at the moment, a lot of it stems from the engine room of the team - the midfield.”

4. The source of power in a team or other group.
5. The source of power in a team or other group.
6. The source of power in a team or other group.

   “And no steel band would be complete without its rhythm section or engine room, as the percussion section is known.”