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.
Dutch in Belgium is sometimes called Flemish, and is spoken by about 60% of the population as their primary lang â¦ uage. French is spoken as a first language by about 40%, and German by less than 1%. However, there are several unofficial languages spoken by small percentages of the population as well.