1. a. a complete route or course, esp one that is curved or circular or that lies around an object
b. the area enclosed within such a route
2. the act of following such a route: we made three circuits of the course
1. the observing, encountering, or undergoing of things generally as they occur in the course of time: to learn from experience; the range of human experience.
2. knowledge or practical wisdom gained from what one has observed, encountered, or undergone: a man of experience.