Meaning
To hang up one's boots / To retire
Example
Depois de 40 anos na medicina, meu pai pendurou as chuteiras.
After 40 years in medicine, my father hung up his boots.
Origin
The expression comes straight from football. When a player ends his professional career, he symbolically "hangs up his boots" — the chuteiras, the studded football boots he will no longer wear on the pitch.
Source: Estado de Minas.
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More idioms
Acertar na moscaTo guess correctly / To hit the nail on the headAmigo da onçaA fake/false friendAndar na linhaTo toe the line / To behave properlyArmar um barracoTo cause a public sceneRodar a baianaTo cause a public scene / To go ballisticArrumar sarna pra se coçarTo ask for troubleArrastar as asasTo hit on someone / To flirtAbrir o jogoTo come clean / To open upArregaçar as mangasTo roll up one's sleeves / To get to workAgarrar com unhas e dentesTo hold on for dear life / To seize an opportunity