Ring a bell Definition 1 of 2Pro Tip 1/3Partial Recall Use 'ring a bell' when something feels slightly familiar, but details are unclear. His face rings a bell, but I can't place him. Pro Tip 2/3Vague memories Indicates a weak memory or uncertain familiarity, not strong recognition. The tune rings a bell, yet I can't name it. Pro Tip 3/3Informal Speech Commonly used in casual conversations, rarely in formal situations. Does the term 'quantum physics' ring a bell to you?