We found 2 dictionaries that define the word Koolen:

General (2 matching dictionaries)

1. Koolen: Wikipedia, the Free Encyclopedia
2. Koolen: Wiktionary

Definitions from Wiktionary (Koolen) ▸ noun:  A surname from Dutch. ▸ Words similar to Koolen ▸ Usage examples for Koolen ▸ Idioms related to Koolen ▸ Wikipedia articles (New!) ▸ Popular adjectives describing Koolen ▸ Words that often appear near Koolen ▸ Rhymes of Koolen ▸ Invented words related to Koolen