We found 4 dictionaries that define the word road builders:

General (3 matching dictionaries)

1. road builders: Merriam-Webster
2. road builders: Vocabulary.com
3. road-builders: Wordnik

Computing (1 matching dictionary)

4. road builders: Netlingo

(Note: See road_builder as well.)

Definitions from WordNet (road builder) ▸ noun:  someone whose business is to build roads ▸ Also see road_builder ▸ Words similar to road builders ▸ Usage examples for road builders ▸ Idioms related to road builders ▸ Wikipedia articles (New!) ▸ Words that often appear near road builders ▸ Rhymes of road builders ▸ Invented words related to road builders