Si Collection, Upper Volume
Radical: Water (shuǐ)
Entry: Niu
Kangxi Stroke Count: 8
Page 611, Entry 08
Tang Rhymes (Tangyun): Pronounced jiu.
Collected Rhymes (Jiyun): Pronounced renjiu. The pronunciation is similar to rou.
Explanation from Analytical Dictionary of Chinese Characters (Shuowen): Describes water flowing smoothly. Another interpretation is warm.
Also, according to Collected Rhymes (Jiyun): Pronounced niu. The meaning is damp.
Also, according to Extensive Dictionary of Rhymes (Guangyun) and Collected Rhymes (Jiyun): Pronounced niu (falling tone). Refers to suo niu, meaning water ripples contracting and gathering.
Sea Rhapsody (Haifu) by Mu Hua states: Blossoms contracted and gathered.