This is for the reading tool. It pulls word definitions from Google Translate, but it will also have the option of giving you definitions from your favorite dictionaries. So if you have suggestions of dictionaries to add, please list them here.
Complete list:
Amharic
https://dictionary.abyssinica.com/ https://glosbe.com/am/enCantonese
http://www.cantonese.sheik.co.uk/scripts/parse_chinese.php
Cebuano
http://www.bohol.ph/wced.php
Dutch
https://glosbe.com/nl/en
English
https://en.oxforddictionaries.com/definition
https://www.merriam-webster.com/dictionary
French
http://www.wordreference.com/fren
https://www.linguee.com/english-french
https://fr.wiktionary.org/wiki/Wiktionnaire:Page_d%E2%80%99accueil
German
https://dict.leo.org/german-english
https://en.pons.com/
https://tureng.com/en/german-english/
https://www.linguee.com/english-german
Hebrew
https://www.morfix.co.il/en/
Hindi
https://www.collinsdictionary.com/dictionary/english-hindi
https://en.bab.la/
http://dsal.uchicago.edu/dictionaries/caturvedi/
http://hindi-english.org/
https://www.shabdkosh.com/
Hungarian
https://topszotar.hu/magyarangol/
Indonesian
https://www.kamus.net/
Italian
https://context.reverso.net/translation/italian-english
https://www.wordreference.com/iten
Japanese
https://jisho.org
http://www.edrdg.org/cgi-bin/wwwjdic/wwwjdic
Korean
http://dic.daum.net/index.do?dic=eng
https://ko.dict.naver.com/
Mandarin
https://www.mdbg.net/chinese/dictionary
https://www.yellowbridge.com/chinese/chinese-dictionary.php
Nahuatl
https://nahuatl.wired-humanities.org
https://gdn.iib.unam.mx
Portuguese
https://dicionario.priberam.org/
https://www.dicio.com.br/
https://www.linguee.com/english-portuguese
https://www.infopedia.pt/dicionarios/lingua-portuguesa
Spanish
http://www.thai-language.com/dict
http://www.spanishdict.com/dictionary
http://dle.rae.es/
http://www.wordreference.com/
https://es.thefreedictionary.com/
http://context.reverso.net/translation/spanish-english/
Russian
http://www.wordreference.com/ruen
https://ru.wiktionary.org/wiki/слово
https://en.wiktionary.org/wiki/слово
https://context.reverso.net/translation/russian-english/
https://de.langenscheidt.com/russisch-deutsch/слово
https://dict.leo.org/russisch-deutsch/слово
https://de.pons.com/%C3%BCbersetzung/russisch-deutsch/слово
Swahili
https://africanlanguages.com/swahili/
https://en.bab.la/dictionary/swahili-english/siku
https://glosbe.com/sw/en
Scottish Gaelic
https://learngaelic.net/dictionary/index.jsp
Tagalog
https://www.filipinolessons.com/dictionary
Thai
http://www.thai-language.com/dict
https://www.thai2english.com/
https://www.clickthai-online.de/wbtde/woerterbuch.php
Turkish
https://tureng.com/en/turkish-english/
Vietnamese
https://glosbe.com/vi/en
Zulu