'Cockspur thorn' definitions:

Definition of 'cockspur thorn'

(from WordNet)
noun
Eastern United States hawthorn with long straight thorns [syn: cockspur thorn, cockspur hawthorn, Crataegus crus-galli]

Definition of 'Cockspur thorn'

From: GCIDE
  • Cockspur \Cock"spur\, n. (Bot.) A variety of Crat[ae]gus, or hawthorn ({Crat[ae]gus Crus-galli}), having long, straight thorns; -- called also Cockspur thorn. [1913 Webster]