non-combustible waste; incombustible item
Commonly used in waste-sorting contexts to refer to trash that cannot be burned, such as metal, glass, and ceramics. Often contrasted with 可燃物 (combustible waste).
Please put non-combustible waste in the designated bag for collection.
In this area, non-combustible waste is collected once a month.
I put out the old pot as non-combustible waste.
Please separate combustible and non-combustible waste before taking out the trash.