On line Dictionaries

PORTUGUESE / ENGLISH:

http://www.wordreference.com/pten/

http://pt.bab.la/dicionario/portugues-ingles/

http://michaelis.uol.com.br/moderno/ingles/index.php

http://translate.google.com.br/

http://tradukka.com/

http://tradutor.babylon.com/portugues/ingles/
  
ENGLISH / ENGLISH:

http://www.macmillandictionary.com/

http://www.thefreedictionary.com/

http://dictionaries.cambridge.org/

http://oxforddictionaries.com/

http://www.ldoceonline.com/

PHRASAL VERBS:

http://www.usingenglish.com/reference/phrasal-verbs/

http://www.phrasalverbdemon.com/dictionarya.htm

SLANG / URBAN LANGUAGE:

http://onlineslangdictionary.com/

http://www.urbandictionary.com/