ROCK-BOTTOM
    
Meaning of ROCK-BOTTOM in English
	
Function: adjective
 Date: 1884
: being the very lowest < rock-bottom prices> also : FUNDAMENTAL <the rock-bottom question>
	
	
	Merriam Webster Collegiate English Dictionary.
    	Merriam Webster - Энциклопедический словарь английского языка.
	2012