'Escape Room' Games Growing in Popularity in U.S.

nightmare – n. a dream that frightens a sleeping person : a very bad dream

directory – n. a book that contains an alphabetical list of names of people, businesses, etc.

theme – n. the main subject that is being discussed or described in a piece of writing, a movie, etc.

mission - n. a task or job that someone is given to do

puzzle – n. a question or problem that requires thought, skill, or cleverness to be answered or solved

lounge – n. an official mark that is stamped on paper or on a small piece of wax to show that something (such as a document) is genuine and has been officially approved

seal – n. an official mark that is stamped on paper or on a small piece of wax to show that something (such as a document) is genuine and has been officially approved

typewriter – n. a machine that prints letters or figures on a sheet of paper when a person pushes its keys

off track – n. away from the main point, thought, etc.

tip – n. useful or secret information

challenging - adj. difficult in a way that is usually interesting or enjoyable

detective - n. a police officer whose job is to find information about crimes that have occurred and to catch criminals