Definify.com

Webster 1828 Edition

Noun.

[hot and spur.] A man violent, passionate, heady, rash or precipitate.

A kind of pea of early growth.

Adj.

Violent; impetuous.

hotspur ‎(plural hotspurs)

(archaic) Somebody who is rash, impetuous or impulsive.
(Can we find and add a quotation of Holinshed to this entry?)