cinder

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++cin·der /ˈsɪndə $ -ər/ noun [countable usually plural]  BURNa very small piece of burnt wood, coal etc 煤渣；炭渣；炉渣 a cold hearth full of cinders 冰冷的炉床，里面全是炭渣 The cake was burnt to a cinder (=completely burnt). 蛋糕完全烤煳了。

Examples from the Corpus

cinder• It uses the ground's grass areas and cinder track for training.• A cooking pot hung on a tripod though the logs beneath were now blackened cinders.• Burning cinders fell onto the roof.• His chill was replaced by hot cinders deep in his heart.• She'd even felt quite calm, only thinking that in the oven his dinner would be in cinders now.• If the foundation is made of cinder blocks, they need to be set in a bed of mortar on the concrete.• Three small houses, made of painted cinder block and aluminum, faced the hotel from across the street.• Pearce, wanting to take a quick throw-in, grabbed the ball and pushed him on the cinder track surrounding the pitch.• The room is maybe six feet square, with cinder block walls.Origin cinder Old English sinder; influenced by French cendre “ashes”

cin·der nounChineseSyllable  

etc burnt of very coal piece a small Corpus wood,

cinder
cin‧der /ˈsɪndə $ -ər/ noun [countable usually plural]a very small piece of burnt wood, coal etc:
    a cold hearth full of cinders
    The cake was burnt to a cinder (=completely burnt).

cin·derBrE /ˈsɪndə(r)/ 🔊NAmE /ˈsɪndər/ 🔊 noun [usually plural] a small piece of ash or partly burnt coal, wood, etc. that is no longer burning but may still be hot 灰烬；余烬◆a cinder track (= a track for runners made with finely crushed cinders) 用细煤渣铺成的跑道●burn sth to a ˈcinder/ˈcrispto cook sth for too long or with too much heat, so that it becomes badly burnt 把某物烧焦（或烧煳）