Polymer composed of brush macromolecules.
Note: The term should not be confused with polymer brush, which is commonly used to describe polymers attached to a substrate.
Source:
PAC, 2021, 93, 963. 'Structure-based nomenclature for irregular linear, star, comb, and brush polymers (IUPAC Recommendations 2020)' on page 964 (https://doi.org/10.1515/pac-2020-0103)