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Wiktionary
childline

n. (context India English) A telephone counselling service for children and young people.

Wikipedia
ChildLine

Childline is a free 24-hour counselling service for children and young people up to their 19th birthday in the UK provided by the NSPCC. Childline deals with any issue which causes distress or concern, common issues dealt with include child abuse, bullying, mental illness, parental separation or divorce, pregnancy and substance misuse.