in blood

Prepositional phrase

archaic

(archaic, hunting) In a state of perfect health and vigour.

Japanese Meaning

（古風な狩猟用語で）完全に健康で活力にあふれる状態 / （古語）絶好調な健康状態、元気いっぱいの様子

The hounds, in blood, pursued the scent with tireless strength.

猟犬たちは健やかで活力に満ちて、疲れを知らぬ力で匂いを追った。

Sense（1）

(archaic, hunting) In a state of perfect health and vigour.

If we be English deer, be then in blood:

Not rascal-like, to fall down with a pinch.