成年服

[ noun ]
(ancient Rome) a toga worn by a youth as a symbol of manhood and citizenship
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Toga \To"ga\, n.; pl. E. {Togas}, L. {Tog[ae]}. [L., akin to
tegere to cover. See {Thatch}.] (Rom. Antiq.)
The loose outer garment worn by the ancient Romans,
consisting of a single broad piece of woolen cloth of a shape
approaching a semicircle. It was of undyed wool, except the
border of the toga pr[ae]texta.

{Toga pr[ae]texta}. [L.], a toga with a broad purple border,
worn by children of both sexes, by magistrates, and by
persons engaged in sacred rites.

{Toga virilis} [L.], the manly gown; the common toga. This
was assumed by Roman boys about the time of completing
their fourteenth year.