homing
/ˈhəumɪŋ; `homɪŋ/ adj[attrib 作定语]
1 (of a pigeon) having the instinct or trained to fly home from a great distance （指鸽子）有自远处飞返原地的本能或训练的.
2 (of a torpedo, missile, etc) fitted with an electronic device that enables it to find and hit a target （指鱼雷、 导弹等）自动寻的的, 自动导引
`homing devices 自动导引装置.