stub axle
noun
a short axle that carries one of the front steered wheels of a motor vehicle and is capable of limited angular movement about a kingpin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012