BACKLOG

Unfilled orders

• Accumulation at the factory

• Accumulation of work

• In-box pileup

• Inventory

• Unprocessed orders

• Unshipped inventory

• What's not done yet

• Something kept back or saved for future use or a special purpose

• An accumulation of jobs not done or materials not processed that are yet to be dealt with

• Large log at the back of a hearth fire