1. (noun) a brush with short stiff bristles for heavy cleaning

• scrub brush
• scrubbing brush

1. (noun) a worker who uses a scrub brush to clean a surface (usually a floor or deck)

• worker

2. (noun) a brush with short stiff bristles for heavy cleaning

• brush

3. (noun) a purifier that removes impurities from a gas

• purifier

1. (noun) a worker who uses a scrub brush to clean a surface (usually a floor or deck)

• scour
• scrub

2. (noun) a brush with short stiff bristles for heavy cleaning

• scour
• scrub