What is the meaning of Braces?

plural of brace

A device worn on the teeth to straighten them.

Handcuffs.

A pair of straps crossing one's shoulders and extending down to one's trousers, where a clip or button arrangement allows them to affix to the trousers, ensuring that they will not fall off.

third-person singular simple present indicative of brace

plural of braça

plural of braç

Source: wiktionary.org