Webster’s Revised Unabridged Dictionary · 1913
Cold-blooded
Cold′-blood′ed (·blŭd′ĕd), a. 1. Having cold blood; — said of fish or animals whose blood is but little warmer than the water or air about them.
2. Deficient in sensibility or feeling; hard-hearted.
3. Not thoroughbred; — said of animals, as horses, which are derived from the common stock of a country.