What are two meanings for brush?

Two meanings for brush include its meaning as a tool and its meaning as vegetation, which are the most common noun definitions. First meaning, as a tool, a brush is an implement with a handle and bristles, fibers, or wires used for cleaning, sweeping, painting, or grooming. Examples include toothbrush for cleaning teeth, hairbrush for grooming hair, paintbrush for applying paint, scrub brush for cleaning floors, and bottle brush for cleaning bottles. In this sense, brush is a manufactured object with bristles designed for specific tasks. Second meaning, as vegetation, brush means dense, low-growing woody plants, shrubs, small trees, undergrowth, and scrub that forms thickets or chaparral in natural landscapes. For example, sagebrush in deserts, underbrush in forests, or brush piles of fallen branches in a yard. In this sense, brush refers to natural shrubby growth. As a verb, brush also has two meanings, to clean or sweep with a brush, and to touch lightly in passing or dismiss. So the two main noun meanings are tool with bristles versus dense shrubby vegetation, representing both a human-made implement and natural plant growth that share the name because early brushes were made from brushwood twigs.