also: けばらい
noun
clothes brush; lint brush
A brush used to remove dust, lint, or hair from clothing.
スーツのほこりを毛払いで落とした。
I removed the dust from my suit with a clothes brush.
ブラシ is a general term for brush, while 毛払い specifically refers to a brush for removing dust or lint from clothes.
Compound of 毛 (ke, 'hair') + 払い (harai, 'removing, paying'), from the verb 払う (harau, 'to brush off'). The reading けばらい is a common variant with rendaku.