Open English Wordnet
Nouns
(n)main, brinyany very large body of (salt) water (n)maina principal pipe in a system that distributes water or gas or electricity or that collects sewage Adjectives
(s)chief, main, primary, principal, mastermost important element“the chief aim of living”,
“the main doors were of solid glass”,
“the principal rivers of America”,
“the principal example”,
“policemen were primary targets”,
“the master bedroom”,
“a master switch” (a)independent, main(of a clause) capable of standing syntactically alone as a complete sentence“the main (or independent) clause in a complex sentence has at least a subject and a verb” (s)mainof force; of the greatest possible intensity“by main strength”