Definition of night line in English:

night line

noun

  • 1Angling. A line with baited hooks set to catch fish at night.

  • 2Chiefly British. Usually in form Nightline. A telephone helpline available at night, especially for university or college students (frequently as the name of such a service); (hence more widely) any overnight out-of-hours telephone service.

Origin

Early 18th century; earliest use found in Gentleman Angler. From night + line.

Pronunciation

night line

/ˈnʌɪt lʌɪn/