toga

Short definition from Wiktionary

Noun

1. 1
   A loose outer garment worn by the citizens of Ancient Rome.
2. 2
   A loose wrap gown.
3. 3
   cap and gown; ceremonial gown or robe (worn by a graduate, lawyer, judge, professor etc.)
4. 4
   Initialism of takeoff / go-around (an engine thrust setting, usually the highest).

Proper noun

1. 1
   Alternative spelling of Tonga, used until the mid 1940s.