We found 2 dictionaries that define the word fourth cranial nerves:

General (1 matching dictionary)

1. fourth cranial nerves: Vocabulary.com

Medicine (1 matching dictionary)

2. fourth cranial nerves: Merriam-Webster Medical Dictionary

(Note: See fourth_cranial_nerve as well.)

Definitions from Wiktionary (fourth cranial nerve) ▸ noun:  Synonym of trochlear nerve. ▸ Also see fourth_cranial_nerve ▸ Words similar to fourth cranial nerves ▸ Usage examples for fourth cranial nerves ▸ Idioms related to fourth cranial nerves ▸ Wikipedia articles (New!) ▸ Words that often appear near fourth cranial nerves ▸ Rhymes of fourth cranial nerves ▸ Invented words related to fourth cranial nerves