Confucius said a large cart without its yoke-pin cannot be driven.
Tips
history
輗 is not used in modern Chinese; it is a classical term for the linchpin that ties an ox-cart's crossbar to its shaft, paired with 軏 (the same fitting on a horse-carriage) in the 《论语》 line on trustworthiness. The cart radical 车 gives the meaning; 兒 supplies the sound.
register
Archaic and literary, met only in classical text and old dictionaries. One old dictionary records a separate reading 輗 for a road-god sacrifice; the carriage-pin sense and reading 輗 is the one attested in the classics.
