Someone who rudely presses the hand offered him in salutation, or too violently shakes it.

To have one's hand clutched aloft in grotesque affectation and shaken violently sideways, as though it were being used to clean a spot out of the atmosphere.
That guy such small hands he needs a Trump salute to compensate.
by notonevoice January 15, 2019
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When you and 20 other blokes drop their daks and show their cocks to the incumbent president. No-homo.
A Trump's farewell, I saw a lineup of 21 guys drop their daks and flop their cocks, giving Trump's 21 gun salute.
by de-pube January 20, 2021
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The ‘middle finger’ given to the mainstream media, liberal politicians or any critics of President Trump or the Trump Administration. The Trump salute is often given metaphorically by President Trump. President Trump, Trumper, the Orange King, Trump chumps, Trumpnado, Trump armor, Trump army, Trumpestuous, 45, Nancy Pelosi, Chuck Schumer, make America great again, Trump bump, mainstream media, lamestream media, liberals, DC swamp, up yours
I’m glad Trump gave Congress the Trump salute, they mess with him all of the time.
by joecoolthefool December 28, 2018
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