Any waste that can cause death or injury to living creatures, especially poisonous chemical compounds.

Waste containing radioactive nuclides.

Discarded electrical and electronic equipment.

To allow time to elapse in an unproductive manner.

A tray placed in such a way as to collect waste (garbage) as it is produced.

An unwanted material produced during some manufacturing process, especially radioactive material from nuclear reactors. / The unwanted results of metabolism, expelled in the urine and faeces.

An utterly worthless person, one unworthy of the space which they occupy.

The more or less radioactive waste produced by nuclear reactors and others.

(idiomatic) If one is not wasteful then one will not be in need.

A pointless or unproductive task.