(noun, adjective, adverb)


1. most important element

- the main doors were of solid glass

Similar word(s): important, chief, master, primary, principal

2. (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

Similar word(s): independent

3. of force; of the greatest possible intensity

- by main strength

Similar word(s): intense

Sentences with main as an adjective:

- main timbers;  main branch of a river;  main body of an army


1. (Britain, dialectal) Very; very much; greatly; mightily; extremely; exceedingly.


1. any very large body of (salt) water

Similar word(s): briny

Definition categories: object, water

2. a principal pipe in a system that distributes water or gas or electricity or that collects sewage

Definition categories: man–made, pipage, pipe, piping