暂无解释，欢迎补充。

宋本廣韻

廣韻目次：下平六豪小韻反切聲母韻母聲調平水韻等呼韻攝韻部国际音标罗马字敖五勞疑豪平聲豪開口一等效豪ŋɑungau

方言集汇

◎ 粤语：ngou4

English

to grow; to increase or advance， to become