【析形】形声字。古文字形从车,甫声。 【释义】《说文》:“人颊车也。”即嘴旁颊骨,此乃引申义。本义指在车轮外另加上用来夹毂的两条直木,用以增强车辐的承载力。引申为帮助、佐助,为辅的常用义,古今相同。[辅车相依,唇亡齿寒]颊骨和牙床骨互相依靠,嘴唇没有了门牙因失去依存而寒冷。比喻事物互为依存的利害关系。 【shape analysis】It is the pictophonetic character. In ancient character it is related to 车(jū,cart) and sounds like the pronunciation of甫(fǔ). 【original meaning】 The two straight timbers for clipping cart hub on cartwheels to strengthen the bearing capacity of spoke.