'Steed' definitions:

Definition of 'steed'

From: WordNet
noun
(literary) a spirited horse for state or war

Definition of 'Steed'

From: GCIDE
  • Steed \Steed\ (st[=e]d), n. [OE. stede, AS. st[=e]da a stud-horse, war horse, fr. st[=o]d a stud of breeding steeds; akin to G. stute a mare, Icel. stedda, st[=o][eth], a stud. [root]163. See Stud of horses.] A horse, especially a spirited horse for state or war; -- used chiefly in poetry or stately prose. "A knight upon a steed." --Chaucer. [1913 Webster]
  • Mounted upon a hot and fiery steed. --Shak. [1913 Webster]

Synonyms of 'steed'

From: Moby Thesaurus