the world > animals > mammals > group Ungulata (hoofed) > family Equidae (general equines) > horse defined by breed > [adjective] > thoroughbred or highly bred (5)
Chiefly North American. Of a domestic animal, esp. a horse: of good pedigree; spec. thoroughbred. Cf. blood, n. 9b.
Like (that of) a pedigree or thoroughbred animal; esp. resembling (that of) a blood (blood, n. 20). Now rare.
= blood horse n. at compounds 5.
produced by line-breeding.