Definition of main
(Entry 1 of 2)
1
: physical strength : force
—used in the phrase with might and main The next instant we were away down the river, clawing with might and main to keep out of the woods.— Mark Twain
3
: the chief part : essential point
they are in the main well-trained
4
: a pipe, duct, or circuit which carries the combined flow of tributary branches of a utility system
main
adjectiveDefinition of main (Entry 2 of 2)
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Merriam-Webster unabridged
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Time Traveler for main
The first known use of main was before the 12th century
See more words from the same century