We found 7 dictionaries that define the word cuckoo's egg:

General (3 matching dictionaries)

1. Cuckoo's Egg, The Cuckoo's Egg: Dictionary.com
2. Cuckoo's Egg, The Cuckoo's Egg, The Cuckoo's Egg (book), The Cuckoos Egg: Wikipedia, the Free Encyclopedia
3. cuckoo's egg: Wiktionary

Computing (2 matching dictionaries)

4. Cuckoo's Egg, The Cuckoo's Egg: Free On-line Dictionary of Computing
5. Cuckoo's Egg, The Cuckoo's Egg, The Cuckoo's Egg (book): Encyclopedia

Medicine (1 matching dictionary)

6. online medical dictionary (No longer online)

Slang (1 matching dictionary)

7. CUCKOO'S EGG: Urban Dictionary

Definitions from Wiktionary (cuckoo's egg) ▸ noun:  Anything harmful that is infiltrated into a place in order to develop and emerge there. Phrases: the cuckoos egg, more... ▸ Words similar to cuckoo's egg ▸ Usage examples for cuckoo's egg ▸ Idioms related to cuckoo's egg ▸ Wikipedia articles (New!) ▸ Words that often appear near cuckoo's egg ▸ Rhymes of cuckoo's egg ▸ Invented words related to cuckoo's egg