wirujcym
Wirujcym is not a standard Polish headword. It is usually a misspelling or nonstandard inflection of the instrumental singular form wirującym, which comes from the present participle wirujący meaning “whirling” or “swirling.” The common root is the concept of a swirl or vortex (wir), and Polish forms built from it can describe motion that rotates or circles.
In standard Polish, the present participle wirujący is declined like an adjective, and its instrumental singular
Etymologically, wir- derives from a root related to whirl or vortex, with typical Polish derivational suffixes
See also: wir (vortex), wirować or wirowanie (to whirl, swirling motion), wirowy (vortical, whirling). While wirujcym