We found 2 dictionaries that define the word smooth planes:

General (2 matching dictionaries)

1. smooth planes: Merriam-Webster
2. smooth planes: Vocabulary.com

(Note: See smooth_plane as well.)

Definitions from WordNet (smooth plane) ▸ noun:  a small plane for finish work ▸ Also see smooth_plane ▸ Words similar to smooth planes ▸ Usage examples for smooth planes ▸ Idioms related to smooth planes ▸ Wikipedia articles (New!) ▸ Words that often appear near smooth planes ▸ Rhymes of smooth planes ▸ Invented words related to smooth planes