crabapple

/K R AE1 B AH0 P AH0 L/
noun
  1. 1

    Any of the wild species of apple tree, genus Malus, which generally yield small, bitter fruit (in comparison to domestic apples, Malus domestica).

  2. 2

    The fruit of this tree.

  3. 3

    An unpleasant person; a person who is crabby.

Source: https://en.wiktionary.org/wiki/crabapple