From 9 a.m. to 5 p.m.

A typical working day.

Of a job, beginning at 9 a.m. and ending at 5 p.m., the usual office hours in many countries.

(informal) To work a typical job beginning at 9 a.m. and ending at 5 p.m.

plural of nine to five

Third-person singular simple present indicative form of nine-to-five

simple past tense and past participle of nine-to-five

present participle of nine-to-five

(Yorkshire) Nine to five.

Someone who works a nine-to-five job.