Wiktionary(0.00 / 0 votes)Rate this definition: 1  roster(Noun) A list of names, usually for an organization of some kind such as military officers and enlisted personnel enrolled in a particular unit; a muster roll; or a sports team, with the names of players who are eligible to be placed in the lineup for a particular game.
Dutch is the official language in Belgium. Dutch is the official language in Belgium. French-speakers often pejoratively call the Dutch language used by Flemings Flemish but it is Dutch nevertheless.
Belgium has 3 official languages, dutch, french and german, but not everybody speaks all of them (most only 1 or 2) This being said, you need dutch in Werchter, Werchter is a town in the middle of nowhere, to far from the language border to speak decent french. Brussels is another story, center of Brussels is bilingual so dutch/french/english won't be a problem.