1. 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)
   "The factory struggled to clear its backlog of orders after the supply chain disruption"
    
2. The large log at the back of a hearth fire
   "They placed a sturdy backlog in the fireplace to keep the fire burning through the night"
    
3. Something kept back or saved for future use or a special purpose
   "There was a backlog of orders to fulfil";
   - reserve, stockpile

1. Accumulate and create a backlog
   "Orders backlogged during the holiday rush"

Derived forms: backlogs, backlogging, backlogged

Type of: accumulate, accumulation, aggregation, amass, assemblage, collection, conglomerate, cumulate, firewood, gather, pile up

Encyclopedia: Backlog