HESPERIAN is a 9 letter word that starts with H.

1. \Hes*pe"ri*an\, a. [L. hesperius, fr. hesperus the
   evening star, Gr. ? evening, ? ? the evening star. Cf.
   {Vesper}.]
   Western; being in the west; occidental. [Poetic] --Milton.
   
   

2. \Hes*pe"ri*an\, n.
   A native or an inhabitant of a western country. [Poetic] --J.
   Barlow.
   
   

3. \Hes*pe"ri*an\, a. (Zo["o]l.)
   Of or pertaining to a family of butterflies called
   {Hesperid[ae]}, or skippers. -- n. Any one of the numerous
   species of {Hesperid[ae]}; a skipper.