Where is the fitting room?

where Preposition

— You use where to ask for the place that something is located. Where did the man go? — Where is the place which something is at. The room where the people cook the food is not cold. Where I'm from, we don't eat much fish.

is Verb

— A form of the verb be when talking about someone or something else. He is late for class. Is it hot in here?

the Determiner

— Used, instead of a, to reference something specific, already known to exist. Compare "I read a book." and "I read the book." — Used with a stress, to show that the word following is special. Are you the John Smith that I went to school with? — Used with an adjective that acts like a noun to mean all of the people concerned The poor are always with us. — Used with superlatives forms of adjectives and adverbs. You are the best.

fitting Adjective

— Appropriate. It's fitting that they marry in Spain because that's where they met.

fitting Noun

— The act of trying on clothes to see how they fit and maybe make adjusments.

room Noun

— A room is a place which is part of a building. Someone is able to see other people who are in the same room. We need a long, wide room because many people will be at the meeting. — Room can mean some space; a place with nothing, only air. I need room to be able to move my arms and not touch people.

room Verb

— To live in or share a room. I roomed with Ryan all four years of college.