noun
lost child center; lost and found for children
A designated area or office, often in department stores, amusement parks, or stations, where lost children are cared for and reunited with guardians.
デパートの迷子センターで迷子の名前を呼び出してもらった。
I had the lost child's name announced at the department store's lost child center.
迷子 means 'lost child' or 'being lost' (for a child), while 迷子センター is the facility that handles such cases.
Compound of 迷子 (まいご, 'lost child') and センター ('center'), a straightforward modern term.