Noun
first place (in a race); first to arrive
どうしてスーツがもう1着買えるって言うの?How can you afford another suit? one suit (of clothes); one item (of clothing)
Noun, Suru verb, Transitive verb
putting on (formal clothes); wearing
Noun
one move
Go (game)
Also written 1着【いっちゃく】