1. [ adjective ] most important element
Synonyms: principal chief primary

"the chief aim of living" "the main doors were of solid glass" "the principal rivers of America" "the principal example" "policemen were primary targets"

Related terms: important
2. [ noun ] (geography) any very large body of (salt) water
Synonyms: briny
Related terms: body_of_water hydrosphere high_sea deep offing territorial_waters territorial_water
3. [ adjective ] (grammar) of a clause; able to stand alone syntactically as a complete sentence
Synonyms: independent

"the main (or independent) clause in a complex sentence has at least a subject and a verb"

Related terms: dependent grammar
4. [ adjective ] of force; of the greatest possible intensity

"by main strength"

Related terms: intense
5. [ noun ] Last name, frequency rank in the U.S. is 2342
6. [ noun ] a principal pipe in a system that distributes water or gas or electricity or that collects sewage
Related terms: pipe sewer_main water_main gas_main electric_main infrastructure
Similar spelling:   Maine