ash/æʃ; æʃ/ n [C,U] 1 the soft grey powder that is left after something has been burned 灰,灰烬: cigarette ash 烟灰 sb's ashes (=the grey powder that is left after a dead body has been burned) 某人的骨灰 2 a type of forest tree, or the hard wood from this tree 梣,白蜡树