It is the Chinese character for "kuai", pronounced kuǎi.
误kuǎi Definition:
1. Kuai grass is a perennial herb with strip-shaped leaves and brown flowers. Grows near water or in moist places. The stems can be used to weave mats and make paper.
2. (Kuǎi) surname. In the early Han Dynasty, there was Kuai Che (Han Xin's counselor), and during the Three Kingdoms period, there was Kuai Liang. Nowadays, most of their tribesmen live in Chuzhou, Anhui.
3. Ancient place names. The hinterland of the Spring and Autumn Zhou Dynasty was located southwest of Luoyang City, Henan Province today.
Extended information:
Interpretation of ancient books
Kuai: "Kangxi Dictionary" and "Tang Yun" are full of bitterness and strangeness, and the sound is sighing. "Zuo Zhuan Cheng Jiu Nian" Although there is silk and hemp, there is no abandonment of Suga Kuai. Justice: Kuai and Suga are connected, and they are also like Suga.
"Biography of Ritual and Mourning Clothes" You are the Fei of Kuai. "Li·Yamazao" "Note" Kuai Xi is astringent and is convenient for washing feet.
Vernacular translation: "Tang Yun" in "Kangxi Dictionary" records that Kuai has the same initial consonant, the same strange vowel, and the same pronunciation. "Zuo Zhuan·Cheng Jiu Nian" records that even if you have silk and linen, don't give up Guan Kuai (a rough fabric similar to coarse cloth). Explanation: Kuai and Jian are connected together, and they also belong to the category of Jian.
"Biography of Ritual and Mourning Clothes" records that straw sandals are made of acanthus and wormwood. "Li·Tamazao" "Note" The mat is rough and convenient for foot washing.
Baidu Encyclopedia-Kuai