Dictionary

http://wordweb.info/free/

Glose
https://glosbe.com/

Look
http://www.onelook.com/

Photo
http://www.photo-dictionary.com/

P
http://www.pdictionary.com/

Urban
http://www.urbandictionary.com/

Oxford
http://www.oxforddictionaries.com/

Free
http://www.thefreedictionary.com/

Your
http://www.yourdictionary.com/

Collins
http://www.collinsdictionary.com/