Definition of four
1
: a number that is one more than three — see Table of Numbers
2
: the fourth in a set or series
the four of hearts
3
: something having four units or members: such as
a
: a 4-oared racing shell or its crew
b
: a 4-cylinder engine or automobile
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Merriam-Webster unabridged
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Time Traveler for four
The first known use of four was before the 12th century
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