We found one dictionary that defines the word racing circuits:

General (1 matching dictionary)

1. racing circuits: Vocabulary.com

(Note: See racing_circuit as well.)

Definitions from WordNet (racing circuit) ▸ noun:  a racetrack for automobile races ▸ Also see racing_circuit ▸ Words similar to racing circuits ▸ Usage examples for racing circuits ▸ Idioms related to racing circuits ▸ Wikipedia articles (New!) ▸ Words that often appear near racing circuits ▸ Rhymes of racing circuits ▸ Invented words related to racing circuits