Story highlights Trump posted an image of himself with the words "Big League" and "Good Luck Team USA"

"Big league" is a favorite phrase of Trump's

Washington (CNN) Donald Trump wished the US Olympic team good luck on Friday -- and may have cleared up a "bigly" debate in the process.

On the night of the 2016 Olympics' opening ceremonies in Rio, Trump posted an image of himself to Twitter and Facebook, giving a thumbs-up with the words "Big League" and "Good Luck Team USA" overlaid.

"Big league" is a favorite phrase of Trump's to describe something being done to a high or extreme degree.

An example from a November rally : Hillary Clinton is playing the "women's card big league."

Another, this time in March to describe Republicans running against him: "They are losing big league."

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