Any military structure or vehicle bearing weapons(noun)
WordNet. Princeton University. 2010.
Use "weapons platform" in a sentence
"Except that the missing tenth world of the outlying Imperial AAnn system of Pyrassis was not a world, but an immense automated weapons platform of the long-extinct race who called themselves the Tar-Aiym."
"Actually, Flinx mused as he held out his arms and let the magnetically charged droplets of water swirl around him and scrub his lanky naked form, one would think it would be even simpler to find a planet-sized weapons platform than a small planet itself."
"Such as, just possibly, the primeval weapons platform that had for millennia masqueraded as the tenth planet of the system known as Pyrassis."