English dictionary

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English adjective: main

1. main most important element

SamplesThe 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.

Synonymschief, master, primary, principal

Similarimportant, of import


2. main (of a clause) capable of standing syntactically alone as a complete sentence

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


Domain categorygrammar

Antonymsdependent, subordinate

3. main of force; of the greatest possible intensity

SamplesBy main strength.



English noun: main

1. main (object) any very large body of (salt) water


Broader (hypernym)body of water, water

Part holonymhigh sea, international waters, offing, territorial waters

Part meronymhydrosphere

2. main (artifact) a principal pipe in a system that distributes water or gas or electricity or that collects sewage

Broader (hypernym)pipage, pipe, piping

Narrower (hyponym)electric main, gas main, sewer line, sewer main, water main

Part meronymbase, infrastructure

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