This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A reserve supply or source.

n. An accumulation, especially of unfinished work or unfilled orders.

n. A large log at the back of a fire in a fireplace.

v. To acquire (something) as a backlog.

verb-intransitive. To become a backlog; accumulate.

n. An accumulation or buildup, especially of unfilled orders or unfinished work

n. A reserve source or supply

v. To acquire something as a backlog, or to become a backlog

n. A large stick of wood, forming the back of a fire on the hearth. Contrasted to forestick.

n. An accumulation (of tasks or of materials) that were not performed or processed at the normal time and require attention.

n. A large log placed at the back of an open wood-fire to sustain combustion and concentrate the heat.

n. the large log at the back of a hearth fire

n. something kept back or saved for future use or a special purpose

v. accumulate and create a backlog

n. 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)

"I think my backlog is about 2-3 dozen titles, my magnum opus being "The Bookbinding Trades Journal"."

forestick   

backlogged    backlogging    backlogs   

gather    cumulate    pile up    accumulate    conglomerate    amass    aggregation    collection    accumulation    assemblage