papasan chair

A large rounded bowl-shaped chair with an adjustable angle similar to that of a futon.

(dated) An early wheelchair.

The best result data among many experiments with uncontrolled variations.

(idiomatic) To show resolve or effectiveness in dealing with a difficulty.

plural of champagne problem

Alternative form of yank someone's chain

plural of challenge exam

An examination that assesses a person's existing knowledge rather than coming at the end of a taught course.

A coin or medallion bearing an organization's emblem and carried by members to prove membership if challenged.