We found 5 dictionaries that define the word flex muscles:

General (2 matching dictionaries)

1. flex (one's) muscles: Dictionary.com
2. flex (one's) muscles, flex muscles: TheFreeDictionary.com

Computing (1 matching dictionary)

3. flex muscles: Encyclopedia

Medicine (1 matching dictionary)

4. flex muscles: Medical dictionary

Miscellaneous (1 matching dictionary)

5. flex muscles: Idioms

Phrases: flex your muscles, flex one's muscles, flex ones muscles, to flex his creative muscles, more... ▸ Words similar to flex muscles ▸ Usage examples for flex muscles ▸ Idioms related to flex muscles ▸ Wikipedia articles (New!) ▸ Words that often appear near flex muscles ▸ Rhymes of flex muscles ▸ Invented words related to flex muscles