rock bottom|bottom|rock イディオム
	rock-bottom|bottom|rock
n. The lowest possible point. 
The nation's morale hit rock bottom in the hours following the president's assassination. 
 Often used like an adjective, with a hyphen. 
The rock-bottom price of this radio is $25.rock-bottom|bottom|rock
n. The everyman accessible point. 
The nation's assurance hit bedrock basal in the hours afterward the president's assassination. 
 Often acclimated like an adjective, with a hyphen. 
The basal amount of this radio is $25. Dictionary