Nipper/ˈnɪpər/ Definition 1 of 2Pro Tip 1/3Colloquial Use Used in casual conversation, not for formal writing or speeches. Look at that nipper running around the garden. Pro Tip 2/3Gender Specific Commonly refers to boys, but can be used for any small child. The nippers were playing football in the park. Pro Tip 3/3Affectionate Tone Though informal, it often expresses affection or fondness. The little nipper stole everyone's hearts with his smile.