The train is fifteen minutes late.

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.

train Noun

— A long vehicle with many cars that are joined together. A train runs on a track. I took the train from Paris to Frankfurt.

train Verb

— If you train someone, you teach them a particular skill. In school we had computer training and sex education.

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?

fifteen Determiner

— (ordinal fifteenth) Fifteen is the number that is after fourteen and before sixteen. It can also be written as 15. Fifteen ducks swim on the lake.

fifteen Noun

— The number 15. and ten makes fifteen. — A set of fifteen things or persons. The fifteen were leaving the city. — To be fifteen years old. Paul is fifteen, but he looks older

minutes

— noun a written account of what transpired at a meeting

late Adjective

— An event is late if it happens after a specified time. He was late to his appointment. — Late at night. It was a late meeting. — Towards the end of. You come in the late afternoon. — Someone who is dead. I loved my late husband.

late Adverb

— Not on time. He came five minutes late. — Late at night. We stayed late and went home in the dark.