/kawr"keuhr/ , n.
1. a person or thing that corks.
2. Informal. something that closes a discussion or settles a question.
3. Informal. someone or something that is astonishing or excellent.
[ 1715-25; CORK + -ER 1 ; defs. 2-3 of unclear relation to def. 1 and perh. of distinct orig. ]