1. 
[syn: Percy, Sir Henry Percy, Hotspur, Harry Hotspur]
2.  a rash or impetuous person; 
The Collaborative International Dictionary of English v.0.48:
Hotspur \Hot"spur`\, n. [Hot + spur.]
   A rash, hot-headed man. --Holinshed. Hotspur
The Collaborative International Dictionary of English v.0.48:
Hotspur \Hot"spur`\, Hotspurred \Hot"spurred`\, a.
   Violent; impetuous; headstrong. --Spenser. Peacham.
   [1913 Webster]
WordNet (r) 3.0 (2006):
Hotspur
    n 1: English soldier killed in a rebellion against Henry IV
         (1364-1403) [syn: Percy, Sir Henry Percy, Hotspur,
         Harry Hotspur]
    2: a rash or impetuous person