Meaning of cinder

cin•der

1. a partially or mostly burned piece of coal, wood, etc.
1. any residue of combustion; ashes.
2. Geol.coarse scoriae erupted by volcanoes.
3. a live, flameless coal; ember.
1. slag (def. 1).
2. a mixture of ashes and slag.

1. to spread cinders on: The highway department salted and cindered the icy roads.
2. to reduce to cinders.

1. to spread cinders on a surface, as a road or sidewalk: My neighbor began cindering as soon as the first snowflake fell.