Ships: the bridge of a ship is so called because it once was a bridge between paddlewheels on either side of early steamboats. This new vantage point was deemed so convenient that it was retained after the paddlewheels were superseded.
In a musical string instrument a bridge is the device which anchors the strings at the body end of the strings.
In song writing a bridge is a part of a song that connects two parts of that song, building a harmonic connection between those parts.
Dentistry: a bridge, or "partial plate," is a dental prosthesis used in place of missing teeth and may be removable or permanently attached.
Electronics: a bridge is an electronic device used to connect two segments of a computer network (combining two networks) or of a telephone network (to support multi-party conference call on telephone).
Finance: a bridge, short for "bridge loan," is the financing for a construction project that is replaced by (= paid off with the proceeds of) a mortgage on the property once it is built.
