=Homing Bombing System 寻的轰炸系统

Hobo \Ho"bo\, n.; pl. {Hobos} or {Hoboes}. [Of uncertain
origin.]
A professional tramp; one who spends his life traveling from
place to place, esp. by stealing rides on trains, and begging
for a living. [U. S.] -- {Ho"bo*ism}, n.

Syn: tramp, bum.
[Webster 1913 Suppl.]