A backlog refers to a collection or accumulation of tasks or work that need to be completed or addressed. It represents the things that have yet to be worked on or finished. Full definition
«Be that as it may, we are going to address the issue of minimum wage, we are also going to address the issue of backlog of promotion areas and allowances of all sorts. (nigeriapoliticsonline.com)
The job action has reduced tourism and the number of foreign students coming to Canada to study in the fall because of backlogs in processing visa applications. (macleans.ca)
Depending on backlogs in the court schedules, this last part of the process could take two to six months. (safianmediation.com)