Noun
a torpedo that is guided to its target (as by the sound of a ship's engines)
Source: WordNetA homing torpedo also needs to be able to outmanoeuvre a target. Source: Internet
Late in World War II, the U.S. adopted a convert homing torpedo (known as "Cutie" ) for use against escorts. Source: Internet
The weapons available to airships were so limited that until the advent of the homing torpedo they had little chance of sinking a submarine. Source: Internet