The phrase "vast hordes" refers to a large, overwhelming group of people or things. It emphasizes the sheer number or amount of something, suggesting an immense or extensive presence. Full definition
But it's not fundamentally different in principle from Edison's lightbulb — it achieves its effect by moving vast hordes of charges around. (discovermagazine.com)
In recent years, the growth of a negative culture in Silicon Valley, the recklessness at which vast hordes of data are being gathered, not to mention the lack of diversity and inclusion, has been highlighted by various commentators. (siliconrepublic.com)
With the aid of vast hordes of police, well stocked coal sources, a media mostly hostile to the trade unionists and as their leader Arthur Scargill would say, a suppliant Trade Union Congress and Labour Party, the strike was brought to an end despite vast amounts of rank and file support. (totalpolitics.com)