暂无解释，欢迎补充。

宋本廣韻

廣韻目次：上三十五馬小韻反切聲母韻母聲調平水韻等呼韻部韻攝罗马字䊬丑寡徹麻二合上聲馬合口二等麻假thruax／thoaa

方言集汇

◎ 粤语：caa3

English

name of a variety of grain， hollyhock; the mallow; root and flower can be used as medicine to neutralize poison; antiphretic (febrifuge)