ˈ ̷ ̷ˌ ̷ ̷ ̷ ̷ noun
1.
a. : a worker who cuts and cures hay
b. : a machine for curing hay
2.
a. : a powerful blow with the fist often resulting in a knockout
b. : an action or statement that is a stunning setback : an attack that overthrows or puts in a dangerous or extremely unpleasant position
a leading coffee user today prepared a haymaker for its coffee suppliers and announced that it plans to begin dispensing free tea with meals to discourage the use of coffee — Springfield (Massachusetts) Daily News
traded haymakers of innuendo and insult across the courtroom — Time