blackheart

Etymology

Definitions

1. 1

   A heart-shaped cherry with a very dark skin.

   • “Here travelers sat beneath a great blackheart cherry tree growing among white rosebushes by the fence,” notes a 1937 American Guide Series book, “and watched the busy river traffic while they waited for supper.”
2. 2

   Any of various plant diseases that cause darkening of the central tissue.

   • Blackheart results from inadequate oxygen supply for respiration (asphyxiation) of internal tuber tissue.
   • Sanewski and Giles (1997) have developed a hybrid resistant to blackheart.
3. 3

   A type of malleable cast iron with minimum tensile strength of 350 N/mm².

   • Blackheart malleable cast iron has excellent castability and machinability.
4. ›+ 1 more definitionshow fewer

   1. 4

      A cruel and remorseless person.

      • That blackheart would have thrust you out to wail and gained the time himself, without you there.
      • As much as I tried to get the blackheart out of my mind, the more he seemed to enter it from unsuspecting directions.
      • Any experience that reveals the spirit from a blackheart

The neighborhood

• neighborwhite-heart