We found 2 dictionaries that define the word koestlers:

General (2 matching dictionaries)

1. Koestlers: Vocabulary.com
2. Koestler's: Wordnik

(Note: See koestler as well.)

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