back burner
noun
a condition of low priority or temporary deferment (usually used in the phrase on the back burner): Put other issues on the back burner until after the election.
Origin of back burner
First recorded in 1945–50; from the custom in cooking of placing pots not requiring immediate attention toward the rear of the stove
Words nearby back burner
back away,
back bacon,
back bay,
back bench,
back boiler,
back burner,
back burner, on a,
back catalogue,
back channel,
back clearance,
back clipping
British Dictionary definitions for back burner
back burner
noun
on the back burner
put aside for the time being, as a subject that is not of immediate concern but that may be activated later; postponed