The meaning of main is physical strength Force —used in the phrase with might and main How to use main in a sentence. Chief in size, extent, importance, etc. Specif., designating a large central unit on which subsidiaries or branches depend the main post office Main (meɪn) adj (prenominal) 1
Chief or principal in rank, importance, size, etc 2 Sheer or utmost (esp in the phrase by main force) The main thing is to keep calm and don’t get angry The main social event of the summer was a dance and reception. Physical strength, power, or force To struggle with might and main
The main of their investments was lost during the war.
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