Detritus/dɪˈtraɪtəs/ Definition 1 of 3Pro Tip 1/3Visual Imagery Imagine scattered objects after events to grasp 'detritus' in everyday use. Post-concert, the ground was covered in detritus. Pro Tip 2/3Not Always Trash 'Detritus' can be waste but also non-trash items left behind. Lost items formed piles of detritus in the lost and found. Pro Tip 3/3Event Aftermath Use 'detritus' to describe leftovers from large public or private gatherings. The wedding ended, leaving a detritus of balloons and streamers.