|twenty-four-seven or 24/7|
|informal twenty-four hours a day, seven days a week; constantly; all the time: consultants would not be available 24/7|
|24/7 or 24/7|
|a gadget; dingus; thingumbob.|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
Twenty-four hours a day, seven days a week: “This convenience store is open 24/7.” The term, which also appears as “24-7,” can be used figuratively to mean “with great time and effort”: “We worked on the design 24/7 in order to complete the work on time.” This phrase was coined in the late twentieth century.