wondered why it didn't show up in OneLook

'Cause it indexes English language dictionaries? For Dutch, I use Woordenboek der Nederlandsche Taal. For French, Le Trésor de la Langue Française Informatisé. For German, Das Deutsche Wörterbuch von Jacob und Wilhelm Grimm. There excellent, largish national dictionaries of the languages in question and nothing quite beats an unabridged, historical, monolingual dictionary which also happens to be online. For Sanskrit, Monier-Williams' Sanskrit-English Dictionary is online, too.

Ceci n'est pas un seing.