godan verb (-ru), intransitive verb
cosplay; dress up in costume
Slang verb derived from コスプレ. Used for dressing up as a character from anime, manga, games, etc.
See also: コスプレ
今度のイベントで、好きなキャラにコスるつもりだ。
I plan to cosplay as my favorite character at the next event.
友達と一緒にコスって写真を撮った。
I cosplayed with my friends and took photos.