means A loose, draped one-piece garment of a single wrapped cloth worn by citizens of ancient Rome, now mostly associated with costume parties.

from Straight from Latin toga, which goes back to the verb tegere, 'to cover' — the same root that gives us 'protect' and 'detect.' To a Roman, the toga literally was 'the covering,' the badge of citizenship draped over the body; a foreign-born slave couldn't wear one. The word arrived in English largely through the Renaissance rediscovery of classical Rome.