close up /kləʊzˈʌp/verb 7/ˈkləʊsʌp/ adjective 1/ˈkləʊsʌp/ noun 1forms 4 verb7 •To close (remove a gap) completely or fully.Some flowers close up at night to stay protected from the cold. •To shut a building or a business for a period of time.We finally managed to close up the shop for the night at about 10 o'clock.The car factory has closed up for the August holidays. •Of a cut or other wound: To heal.With stitches, the cut should close up in a week to ten days. •To move nearer together so that a gap is removed.The crowd closed up and I couldn't get through to the train. •To become less 'open' or communicative; to shrink back. •(Australia, slang) To stop talking. •To enclose, confine.In Sanʿa the Jews have been separated from the Mohammedan population for the last three hundred years, and closed up in a Ghetto apart from the main town. — 1929 close-up /ˈkləʊsʌp/ adjective1 •In near proximity.A worldwide TV audience had a close-up view of the astronauts when they splashed down and as they emerged from the bobbing spaceship they call Gumdrop. — 1969 noun1 •A photographic (or other) image in which the subject is shown at a relatively large scale, and occupies most or all of the frame.All right, Mr DeMille, I'm ready for my close-up. — 1950 formsclosed up · closing up · closes up · close-ups