We found 10 dictionaries that define the word on the bit:

General (3 matching dictionaries)

1. on the bit, on the bit: Oxford Learner's Dictionaries
2. On the bit: Wikipedia, the Free Encyclopedia
3. On the bit: TheFreeDictionary.com

Business (1 matching dictionary)

4. On the bit: Legal dictionary

Computing (1 matching dictionary)

5. On the bit: Encyclopedia

Medicine (1 matching dictionary)

6. On the bit: Medical dictionary

Miscellaneous (2 matching dictionaries)

7. On the bit, On the bit: Idioms

Sports (2 matching dictionaries)

8. Hickok Sports Glossaries (No longer online)
9. On the bit: Sports Definitions

Definitions from Wikipedia (On the bit) ▸ noun:  The phrases "on the bit", "behind the bit" and "above the bit" are equestrian terms used to describe a horse's posture relative to the reins and the bridle bit. ▸ Words similar to on the bit ▸ Usage examples for on the bit ▸ Idioms related to on the bit ▸ Wikipedia articles (New!) ▸ Words that often appear near on the bit ▸ Rhymes of on the bit ▸ Invented words related to on the bit