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 …

The main thing is to keep calm and don’t get angry. The main social event of the summer was a dance and reception.

Main definition: Most important; principal.

Main refers to the primary or most important aspect or part of something. It signifies the central or principal focus, significance, or purpose of a subject or object.