Definition of "backlog" in English

noun

1. A large log to burn at the back of a fire.

2. A reserve source or supply.

3. An accumulation or buildup, especially of unfilled orders, unconsumed products or unfinished work.

   • He went to work on Saturday to try to work through the backlog of papers on his desk.
   • Kyle purchased a new one despite having a backlog of video games that he hasn't played.

4. A log containing text previously read, as in text-based video games or chat rooms.

verb

1. (transitive, intransitive) To acquire something as a backlog, or to become a backlog