Monoplane (noun)

An aircraft with a single set of wings, as opposed to a biplane or triplane.

Origin:

Early 20th century: from mono- 'one' + plane.

Examples:

1. The first successful monoplane flight took place in 1903.
2. The monoplane design allowed for faster and more efficient flight.
3. The monoplane was the standard design for commercial airliners in the mid-20th century.
4. The monoplane has since been largely replaced by more advanced aircraft designs.
5. The monoplane in the museum is a classic example of early aviation technology.