Sunday punch
noun
1.
Boxing.
the most powerful and effective punch of a boxer, especially the punch used in trying to gain a knockout.
2.
anything, as an armed force, line of argument, etc., capable of inflicting a powerful blow on a hostile or opposing person or thing.
Origin
1930-35
British Dictionary definitions for
Sunday punch
Sunday punch
noun
(
informal
,
mainly US
)
1.
(
boxing
) a heavy blow intended to knock out one's opponent
2.
any manoeuvre or action intended to crush an opponent
Slang definitions & phrases for
Sunday punch
Sunday punch
modifier
: rockets, the ''Sunday punch'' weapon of the war
noun phrase
A very hard and effective blow or assault, with the fist or otherwise
: and lay his Sunday punch on your snoot
(1929+ Prizefighting)
strong and effective pitch, esp an overpowering fastball
(1952+ Baseball)