D defs.my
Entry 2 senses Webster, 1913

Highflier

/hīf'-līˌ-ẽr/ · High·fli·er · IPA /haɪˈflaɪə(ɹ)/
01 n. One who is extravagant in pretensions, opinions, or manners; one who is highfaluting.
  1. 1.
    One who is extravagant in pretensions, opinions, or manners; one who is highfaluting.
  2. 2.
    a person of great ability and ambition.
Syn. highflyer.