Chou Collection, Upper Volume
Radical: Mouth (kǒu)
Character: Zǎn
Kangxi stroke count: 15
Page 208, Entry 16
Pronounced cǎn.
According to the Explaining Graphs and Analyzing Characters (Shuowen Jiezi), it has the same meaning as qián (to hold in the mouth).
According to the Jade Chapters (Yupian), it means to hold in the mouth.
In the Zhuangzi, Tianyun chapter, it is written: Mosquitoes and gadflies biting the skin will keep one awake all night.
In the Huainanzi, Lanming Xun chapter, it is written: To taste the flavor and hold the sweetness.
Also, according to the Collected Rhymes (Jiyun), it is pronounced zǎn.
Also, according to the Tang Rhymes (Tangyun), it is pronounced zá, and according to the Collected Rhymes (Jiyun), it is also pronounced zá, with the same meaning.
Furthermore, according to the Collected Rhymes (Jiyun), another interpretation is to bite the lips.