put one's shirt on
idiom
chiefly British, informal
: to bet a lot of money on (someone or something)
I put my shirt on a horse in the second race.
Cite this Entry
“Put one's shirt on.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/put%20one%27s%20shirt%20on. Accessed 27 Nov. 2025.
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Merriam-Webster unabridged
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