ceremonial clothing worn at a religious feast.

In wider sense: Ceremonial or significant garments of any kind. Obsolete.

The complete set of clothes considered appropriate for a particular occasion, such as a public ceremony, a formal dinner, etc. Also figurative.

esp. Professional or official dress.

Full or official dress; esp. full military costume. Also figurative. Cf. en grande tenue, adv.

Official or ceremonial robes or attire. Also figurative. Obsolete.

colloquial. One's best clothes and finery; esp. ceremonial military or official costume, ‘full fig’.