Brush/brʌʃ/ Definition 1 of 6Pro Tip 1/2Object Use The noun 'brush' often describes tools used for a specific action like grooming or painting. He picked up the paint brush to finish the mural. Pro Tip 2/2Adjective Pairing 'Brush' as a noun can be combined with an adjective describing the job it does. She reached for her soft makeup brush.