homing          
adjective [ before noun ] uk/ˈhəʊ.mɪŋ/ us/ˈhoʊ.mɪŋ/
 (动物)有回家能力的
relating to the ability of some animals to find their way home
  Migrating birds and fish have a strong homing instinct. 候鸟和洄游的鱼类有一种很强的归家本能。 
  (电子设备)自导引的
(of an electronic device) producing a special signal so that it can be found using electronic equipment
  The president's car is equipped with a homing device. 总统的车装有自导引设备。