noun
third class; third rank; third prize
Used for ranking, grading, or classifying something as third in a system (e.g., train classes, competition prizes, quality tiers).
彼はコンテストで３等に入賞した。
He won third prize in the contest.
この列車の３等車はとても混んでいる。
The third-class car of this train is very crowded.
First class or first prize; the top rank.
Second class or second prize; one rank above 三等.
Compound of 三 (three) and 等 (class, rank).