Nowadays, the need of advanced free text filtering in multilingual environment is increasing. Therefore, when searching for specific keywords in multilingual information space, it is desirable to eliminate occurrences where the word or words of each language are used in an inappropriate sense. This task could be exploited in internet browsers, and resource discovery systems, relational databases containing free text fields, electronic document management systems, data warehouse and data mining systems, etc. In order to resolve this problem in this paper we present a Word Sense Disambiguation interface, which it returns the words senses in different languages and it could be employed for multilingual natural language applications. This interface resolve lexical ambiguity of nouns and verbs in some European languages (English, Spanish) input texts, using the taxonomy of the EuroWordNet lexical knowledge database, and returning a multilingual output of the words senses (English, Spanish, Catalan and Basque). In addition to the relations in WordNet 1.5, EuroWord- Net includes cross-language and cross-category relations, which are directly useful for multilingual Word Sense Disambiguation. This interface has been implemented using programming language C++ and providing a visual framework.