Definition of rock-bottom
(Entry 1 of 2)
: being the very lowest
rock-bottom prices
also
: fundamental
the rock-bottom question
rock bottom
nounDefinition of rock bottom (Entry 2 of 2)
: the lowest or most fundamental part or level
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Merriam-Webster unabridged
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Time Traveler for rock-bottom
The first known use of rock-bottom was in 1884
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