eraser dust; eraser shavings; eraser crumbs
Refers to the small bits of rubber or debris left after using an eraser.
I brushed the eraser dust off the desk with my hand.
There are eraser shavings on the floor.
Rare kanji form using 滓; not commonly encountered.
Compound of 消し (keshi, 'erasing', from 消す) and カス (kasu, 'dregs, refuse'). The katakana spelling カス is conventional for this meaning.