Someone or something that is greatest in some respect. The greatest, highest-ranking, or most prominent person. Also used occasionally of an…

Of a particular thing or person: first or highest in rank or importance; that is at the head of all… Of a thing: first, chief, most important.

Of a number of things or persons, or one of their number: belonging to the first rank; among the… Applied to persons, animals, etc.

Of a person: leading, important. Now historical.

Of a person: highest in authority or rank; holding the highest place in authority, government, or power. Formerly also with †to: superior to, having…

Compared as chiefer, chiefest. superlative.

That takes the lead; chief, principal, prominent. leading lady, leading man: the chief actress or actor in a theatrical company or a film. Also leadi…

Of a book, an author: Standard. Obsolete.

In extended use: of the highest rank; major, important, notable.

Of high rank, authority, or importance. Also: relating to or involving people of high rank or authority.