A Tractor Beam
is a fictional
device used in many science fiction
stories. Used primarily on starships
, tractor beams "grab" onto escaping ships or for that matter any kind of object in space
or in atmosphere
and pull them towards the person operating the beam, hence "tractor
ing". The idea behind tractor beams is that they somehow grab hold of matter and are able move it around at will.
Tractor beams are used in Star Trek, Star Wars and just about any major SF story. Tractor beams don't exist per se, but are probably more or less possible, the concept being more or less allowed within physical laws.