It refers to a furniture style famous during French revolution and in the late 1700' and early 1800's.
A period of design in France after the Revolution, from 1795 to 1804. Characterized by Roman motifs and named for the Directory, the French government during that period.
Period (1792-1804) following the French Revolution when royal decoration was replaced by classic ornament. Simple, graceful furniture which showed Greek and Roman influence was popular.