Brussels /ˈbɹʌsəlz/ noun7 •The capital city of Belgium. Official name: City of Brussels. •A region of Belgium. Official name: Brussels-Capital Region.Buying bread from a man in Brussels / He was 6'4", and full of muscle — 1981 •A Brussels sprout.We cooked a big Christmas dinner with turkey, stuffing, Brussels, and parsnips. •A Brussels carpet.If the same design be produced in a Brussels and in a Tapestry it will be found that the Brussels shows sharp, clean-cut outlines, where the Tapestry gives ragged, uneven effects, […] — 1911 •A historical district of the German Reich. Official name: District of Brussels. •A historical republic of Western Europe; in full, Calvinist Republic of Brussels. •A historical county of Western Europe; in full, County of Brussels.