Definition of brad

• n. - A thin nail, usually small, with a slight projection at the top on one side instead of a head; also, a small wire nail, with a flat circular head; sometimes, a small, tapering, square-bodied finishing nail, with a countersunk head.
• n. - A thin nail, usually small, with a slight projection at the top on one side instead of a head; also, a small wire nail, with a flat circular head; sometimes, a small, tapering, square-bodied finishing nail, with a countersunk head.