1. a partly burned piece of coal or wood
2. a small piece of partly burned coal, wood, or other material

Examples

• The fireplace was full of cold cinders from last night’s fire.
• A hot cinder flew out of the campfire and landed on my jacket.
• The old steam locomotive left a trail of cinders along the railroad tracks.
• She swept up the cinders and ashes from the wood stove.
• The blacksmith’s forge was surrounded by piles of cinders.
• A cinder block is made from concrete and coal cinders.