This is the 908th most frequent French word.
circuit
A route or path that forms a loop.
Here, 'circuit' refers to an electrical network or pathway.
Le circuit électrique est complexe.
The electrical circuit is complex.
In this instance, 'circuit' denotes a predefined route or itinerary for sightseeing.
Nous avons parcouru le circuit touristique de la ville.
We followed the tourist circuit of the city.
This usage of 'circuit' refers to a sequence of exercises or activities for training purposes.