having the highest rank or standing in relation to others of the same kind:

[ C ] the position or level something or someone has in a list that compares their importance, quality, success, etc.:

[ C ] a list that compares the importance, quality, success, etc. of people or things of the same type:

[ U ] the action of deciding where someone or something should be in a list that compares things of the same type:

having the highest position of authority in an organization, at a meeting, etc.: