Chen Collection, Middle Volume
Radical: Tree (mù)
Kangxi stroke count: 14
Page 544, Entry 05
Tang Rhymes (Tangyun), Collection Rhymes (Jiyun), and Rhyme Meeting (Yunhui) define it as pronounced ma (falling tone).
Jade Chapters (Yupian): A crossbar at the head of a bed.
Rhyme Meeting (Yunhui) cites the Commentary on the Carriage Mechanism in the Book of Master Zeng (Zengzi): The mechanism is made of wood and shaped like a bed; a rope is used to secure both ends, which is called a ma.
Correct Meaning Thoroughly Clarified (Zhengzitong): Popularly, using wood strips to secure an object is called a mazi.
Textual Research: The entry in the Rhyme Meeting (Yunhui) cites the Commentary on the Carriage Mechanism in the Book of Master Zeng (Zengzi) stating that the mechanism is made of wood, shaped like a bed, and the two ends secured by a rope are called a ma. In accordance with the original text, the phrase securing both ends has been corrected to the two ends are called a ma.