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embers kept for starting a new fire, or any burning object (covered by ashes) which causes a fire disaster, the farm products getting heated with piling up and closing completely
【巳集中】【火字部】? ·康熙筆畫:12 ·部外筆畫:8
《集韻》遏合切,音姶。藏火也。 又《正字通》今人謂藏火使復然曰?。讀若遏。