We propose a lexical organisation for multilingual lexical databases (MLDB). This organisation is based on acceptions (word-senses). We detail this lexical organisation and show a mock-up built to experiment with it. We also present our current work in defining and prototyping a specialised system for the management of acception-based MLDB. Keywords: multilingual lexical database, acception, linguistic structure. Introduction Needs for large scale lexical resources for Natural Language Processing (NLP) in general and for Machine Translation (MT) in particular, increase every day. These resources are considered to represent the most expensive part of almost any NLP system. Hence, an increasing interest in the development of reusable dictionaries can be observed. To develop a Multilingual Lexical Database (MLDB), we think of two main approaches. First, the transfer approach where the links between the languages are realized via unidirectional bilingual dictionaries. This approach is...