ROCK-HARD
    
Meaning of ROCK-HARD in English
	
also rock hard
 Something that is rock-hard is very hard indeed.
 During the dry season the land is rock hard.
 ADJ
	
	
	Collins COBUILD Advanced Learner's English Dictionary.
    	Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне.
	2006