Biplane (noun)

1. An aircraft with two main wing planes one above the other.
2. An aircraft design with two wings.

Origin:

The word 'biplane' originated in the early 20th century and is derived from the prefix 'bi' meaning two and the word 'plane' meaning a flat surface or an aircraft.

Examples:

1. The biplane was used extensively for military purposes during World War I.
2. The biplane was an early form of aircraft that was used for transportation and aerial reconnaissance.
3. The biplane was designed with a single engine that powered both propellers.
4. The biplane was considered to be a technological marvel when it was first introduced.
5. The biplane had limited speed and range compared to modern aircraft, but it was a significant step forward in aviation technology.