The term “gemel” means “twin”, and was the medieval term for what is today blazoned a “bar gemelle” or “bar gemel”: a twinned bar, i.e., two bars adjacent. The illustration shows two bars gemel (four bars total).
In Society armory, other ordinaries may likewise be gemelled. An ordinary gemel looks no different from that ordinary voided, but the usage is not the same: an ordinary gemel has no charges in its interior. It is considered a single, self-contained unit. See also fess, ordinary.
Brunissende Dragonette bears: Per fess sable and gules, a bar gemel argent.