When you describe something as main, you mean it's the most important, well-known, or biggest of its kind. The main branch of the post office in a city is usually the largest and busiest.

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

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

physical strength, power, or force: to struggle with might and main. the chief or principal part or point: The main of their investments was lost during the war.

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

Main (noun): The largest or most influential group in a particular context. The term "main" is a versatile word that signifies something central, essential, or dominant.

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

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 differences and similarities between them?

San Bernardino County is comprised of more than 40 departments and agencies staffed by more than 25,000 public service professionals providing a wide range of vital services in areas that include public safety, health and human services, economic development, housing, recreation, and culture.