What is the meaning of Highflier?

A person who or a type of aircraft that flies at high elevations.

An ambitious person, especially one who takes risks or has an extravagant lifestyle.

A vertical pole used in commercial fishing to locate the beginning and end of a long fishing line.

A glamorous stock that potentially offers high returns to investors.

A swingboat.

A writer of begging letters.

A type of phaeton carriage.

Source: wiktionary.org