This is the 13087th most frequent Russian word.
массой
The Russian word "массой" is the instrumental singular form of "масса," meaning "mass" or "in bulk."
In this sentence, 'массой' refers to a 'multitude' or a large number of ideas, describing an abstract quantity.
Она пришла к нам с массой интересных идей.
She came to us with a multitude of interesting ideas.
Here, 'массой' is used to denote physical mass, a measurable property in physics that influences motion.
Тело имеет массу, определяющую его движение.
A body has a mass that determines its motion.
In this example, 'массой' describes a considerable quantity of people, showcasing its use for counting groups or crowds.