Backlog
Backlog (bak"log`; 115) , noun
[Back, a. + log.]
1.
A large stick of wood, forming the back of a fire on the hearth. Contrasted to forestick. [United States]
There was first a backlog, from fifteen to four and twenty inches in diameter and five feet long, imbedded in the ashes.
2.
An accumulation (of tasks or of materials) that were not performed or processed at the normal time and require attention; as, unexpected demand led to a large backlog of unfilled orders; politically motivated delays led to a large backlog of unconfirmed judicial appointments.