Chou Collection, Upper Volume
Radical: Mouth (kǒu)
Character: ta
Kangxi strokes: 17
Page 211, Entry 29
Broad Rhymes (Guangyun): Pronounced ta.
Collected Rhymes (Jiyun), Rhyme Compendium (Yunhui), Correct Rhymes (Zhengyun): Pronounced ta.
Broad Rhymes (Guangyun): To drink or gulp down.
Collected Rhymes (Jiyun): To gulp down in large mouthfuls.
Book of Rites (Liji), Section on Manners (Quli): Do not gulp down soup in large mouthfuls.
Commentary: Because the vegetables are not being chewed.
Sub-commentary: If a person does not chew their vegetables, but holds them in the mouth and swallows them down, this is an attempt to eat quickly and consume more, and it produces a sound that is impolite and injurious to one's sense of shame.
Also in Collected Rhymes (Jiyun): Pronounced tui. The meaning is the same.