1. (

• backlog

) 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) ;

2. (

• backlog

) the large log at the back of a hearth fire ;

3. (

• reserve ,
• backlog ,
• stockpile

) something kept back or saved for future use or a special purpose ;

1. (

• backlog

) accumulate and create a backlog ;