This
database is a comprehensive collection of all the American idioms and slang available.
American Idioms are many and varied. We hope you enjoy our collection. We are adding more all the time.
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A photo finish is when two contestants (usually in a race) finish at almost exactly the same time, making it difficult to determine the winner. (The saying stems from the practice of taking a photograph when the winners cross the finish line to determine who was ahead at the time.)
It is the temperature range in which the body doesn't shiver or sweat, but has an idiomatic sense of a place where people feel comfortable, where they can avoid the worries of the world. It can be physical or mental.