plural fourths
ˈfȯr(th)s
1
: one that is number four in a series see Table of Numbers
2
a
: a musical interval (see interval sense 2) embracing four tones of the diatonic scale
b
: a tone at this interval
specifically
: subdominant sense 1
c
: the harmonic combination of two tones a fourth apart
3
: the fourth forward gear or speed of a motor vehicle
shifted into fourth
4
capitalized
: independence day
—used with the
watched fireworks on the Fourth
fourth
adjective or adverb
fourthly
adverb
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Merriam-Webster unabridged
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