What is "poleshuks"

Poleshuks ( West Polesian: Полэшукы/Poleshuki, , , , ) is the name given to the people who populated the swamps of Polesia (Polesie, also Polissia). The Poleshuk's microlanguage is close to the Rusyn, Ukrainian, and Belarusian languages; it maintains many local peculiarities of other languages and dialects of the area.