According to the Tang Rhyme (Tangyun), it is pronounced hu. According to the Collected Rhymes (Jiyun), it is pronounced hu, with a sound similar to gu. It is read similarly to huo. The Discussion of Writing and Explanation of Characters (Shuowen Jiezi) defines it as to push with the hand.
Also, according to the Collected Rhymes (Jiyun), it is pronounced ku, with a sound similar to ku. The meaning is the same.
Also, according to the Tang Rhyme (Tangyun), it is pronounced hun. According to the Collected Rhymes (Jiyun), it is pronounced hun, with a sound similar to hun. The meaning is the same. Sometimes also written in a variant form (kun).
Also, according to the Collected Rhymes (Jiyun), it is pronounced hun. The Extensive Record (Boya) defines it as to hold under the arm or grip.
Also, it is pronounced gun, with a sound similar to gun. The meaning is the same.