Highflying \High"fly`ing\, a.
1. Extravagant in opinions or ambition. "Highflying,
arbitrary kings." --Dryden.
[1913 Webster]
2. Flying at a high altitude; -- of airplanes.
[PJC]
3. Having an excessively high cost or perceived value;
temporarily very successful; -- of objects with respect to
a market and people in their occupations; as, highflying
internet stocks; highflying executives moving between
companies.
[PJC]