An ancient region of western Europe that included what is now northern Italy and France and Belgium and part of Germany and the Netherlands WordNet 3.0 & Open English WordNet

Gaul was a region of Western Europe first clearly described by the Romans, encompassing present-day France, Belgium, Luxembourg, and parts of Switzerland, the Netherlands, Germany, and Northern Italy. Wikipedia

Ancient nation encompassing modern-day France and parts of surrounding countries Wikipedia Disambiguation

Historical region of Western Europe inhabited by Celtic tribes Wikidata

A region of Western Europe during the Iron Age and Roman era, encompassing present day France, Luxembourg and Belgium, most of Switzerland, the western part of Northern Italy, as well as the parts of the Netherlands and Germany on the west bank of the Rhine. OmegaWiki

A Roman-era region roughly corresponding to modern France and Belgium. Wiktionary

Region. Wiktionary (translation)