Chou Collection, Middle Volume
Radical: Earth (tǔ)
Entry: wa
Kangxi stroke count: 8
Page 227, Entry 03
Broad Rimes (Guangyun) and Collected Rimes (Jiyun): Pronounced jue (rising tone). Describes the appearance of being empty and deep. Also pronounced xue (high-falling tone).
Extensive Elegantia (Boya): Means deep.
Six Writings Unification (Liushutong): Also means to block or plug up; it is the ancient form of the character for to fill or plug (sai).
Orthography Thoroughly Explained (Zhengzitong): The meaning is the same as the character for cave (xue).