Night/naɪt/ Definition 1 of 4Pro Tip 1/3Daily Cycle Night signifies the end of a day's activities for many cultures. Shops close at night. Pro Tip 2/3Non-visual 'Night' conveys limited visibility, so activities relying on sight are uncommon. Driving at night is more challenging. Pro Tip 3/3Quietness Night is often associated with calmness and stillness in many environments. The city is quieter at night.