'Backlog' definitions:

Definition of 'backlog'

From: WordNet
noun
An accumulation of jobs not done or materials not processed that are yet to be dealt with (especially unfilled customer orders for products or services)
noun
The large log at the back of a hearth fire
noun
Something kept back or saved for future use or a special purpose [syn: reserve, backlog, stockpile]
verb
Accumulate and create a backlog

Definition of 'Backlog'

From: GCIDE
  • Backlog \Back"log`\ (b[a^]k"l[o^]g`; 115), n. [Back, a. + log.]
  • 1. A large stick of wood, forming the back of a fire on the hearth. Contrasted to forestick. [U.S.] [1913 Webster]
  • There was first a backlog, from fifteen to four and twenty inches in diameter and five feet long, imbedded in the ashes. --S. G. Goodrich. [1913 Webster]
  • 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. [PJC]