Chou Collection, Upper Volume
Radical: Mouth (kǒu)
Character: er
Kangxi strokes: 11
Page 193, Entry 23
Broad Rimes (Guangyun): Pronounced er. Collected Rimes (Jiyun), Dictionary of Rimes (Yunhui), and Orthodox Rimes (Zhengyun): Pronounced er.
Broad Rimes (Guangyun): The appearance of yielding or complying.
Collected Rimes (Jiyun): To smile forcedly.
Songs of Chu (Chucheng), Divination (Buju): With forced smiles and fawning laughter.
Commentary: Both refer to the appearance of forced smiling.
Another form is written as er.
Also: Broad Rimes (Guangyun) and Collected Rimes (Jiyun): Pronounced wa. Dictionary of Rimes (Yunhui): Pronounced wa.
Jade Chapters (Yupian): To babble, the speech of a small child.
Broad Rimes (Guangyun): The sound of cooing.
Xunzi, On Enriching the State (Fuguo): To pat and soothe, to comfort with cooing sounds.
Huainanzi, Summary of Essentials (Yaolue): The gaps of forced smiles and gritted teeth.
Broad Rimes (Guangyun) and Collected Rimes (Jiyun): Written as er.
Also: Collected Rimes (Jiyun): Pronounced xi. The meaning is the same.