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The meaning of MAIN is physical strength : force —used in the phrase with might and main. How to use main in a sentence.

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main (meɪn) adj (prenominal) 1. chief or principal in rank, importance, size, etc 2. sheer or utmost (esp in the phrase by main force)

The main thing is the most important one of several similar things in a particular situation. ...one of the main tourist areas of Amsterdam. My main concern now is to protect the children. What are the …

MAIN definition: 1. larger, more important, or having more influence than others of the same type: 2. a large pipe…. Learn more.

Main definition: Most important; principal.

Feb 17, 2026 · main (not comparable) Of chief or leading importance; prime, principal. [from 15th c.] quotations

Definition of main adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.