- Boxing. the most powerful and effective punch of a boxer, especially the punch used in trying to gain a knockout.
- anything, as an armed force, line of argument, etc., capable of inflicting a powerful blow on a hostile or opposing person or thing.
Origin of Sunday punch
First recorded in 1930–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- boxing a heavy blow intended to knock out one's opponent
- any manoeuvre or action intended to crush an opponent