Definition of up-and-down
(Entry 1 of 2)
1
: marked by alternate upward and downward movement, action, or surface
2
: perpendicular
up and down
adverb
Definition of up and down (Entry 2 of 2)
1
: to and fro
paced up and down
2
: so as to move upward and then downward repeatedly
jumping up and down
3
archaic
: here and there especially throughout an area
4
: with regard to every particular : thoroughly
knew the territory up and down
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Merriam-Webster unabridged
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The first known use of up-and-down was in the 12th century
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