IPA: /ˈhɛlˌplaɪn/
KK: /ˈhɛlˌplaɪn/
A service that provides assistance or support to people who call, often by phone, for help with problems or questions.
If you are feeling overwhelmed, you can call the helpline for support.
Helpline is formed from "help" (from Old English *helpan*, meaning to assist or aid) and "line" (from Old English *līn*, meaning a cord or string). The word "helpline" refers to a service that provides assistance or support through a communication line.
Think of a 'line' that connects you to 'help' — a helpline is a way to reach out for assistance.