We found 2 dictionaries that define the word planing machines:

General (2 matching dictionaries)

1. planing machines: Merriam-Webster
2. planing machines: Vocabulary.com

(Note: See planing_machine as well.)

Definitions from WordNet (planing machine) ▸ noun:  a power tool for smoothing or shaping wood ▸ Also see planing_machine ▸ Words similar to planing machines ▸ Usage examples for planing machines ▸ Idioms related to planing machines ▸ Wikipedia articles (New!) ▸ Words that often appear near planing machines ▸ Rhymes of planing machines ▸ Invented words related to planing machines