Modifying a noun which expresses a proportion of a whole. Now usually in (the) most part (of). In later use frequently denoting a comparatively…

Of a numerical aggregate, proportion, etc. Frequently modifying a noun denoting a part or proportion, esp. in much deal: a great part; (also as an…

Chief in size or extent; constituting the bulk or principal part; designating the chief part of the thing specified. Esp. in main body n. also main…

That constitutes the majority or larger part; usually with part, portion, or other similar nouns. Formerly (rare) in predicative use: †greater in…

Main, the great majority of. Obsolete.