cave in а) оседать, опускаться The roof caved in, trapping the miners. The weight of the snow caved in the roof. б) coll. уступать, отступать, сдаваться I thought he could face his opponent and not cave in so easily, but I was disappointed. в) не удаваться (о бизнесе и т.д.) Why do you want to appoint this man as director? The last firm he worked for caved in.