coastguard
noun UK uk/ˈkəʊst.ɡɑːd/ us/ˈkoʊst.ɡɑːrd/
[ C ]水上警察；海岸警卫队队员
an official who is employed to watch the sea near to a coast for ships that are in danger or involved with illegal activities
the coastguard [ S ]海岸警卫队
the official organization that coastguards belong to