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2 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 pearlash
 珍珠灰;粗製碳酸鈣

From: Webster's Revised Unabridged Dictionary (1913)

 Pearl·ash n. Chem. A white amorphous or granular substance which consists principally of potassium carbonate, and has a strong alkaline reaction.  It is obtained by lixiviating wood ashes, and evaporating the lye, and has been an important source of potassium compounds.  It is used in making soap, glass, etc.
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