Computational lexicography is a fast-growing field with implications for a wide range of disciplines - theoretical linguistics, computational linguistics, cognitive science and artificial intelligence - as well as for the construction of dictionaries. The "Grosetto Workshop" brought together for the first time an international and interdisciplinary group of researchers concerned with computational lexicography. These papers, selected from the workshop, provide a baseline and a reference point for further research on problems associated with the lexicon. The collection is not merely of historical interest: it addresses many issues that are still debated today and that guide current research and development.