qualifier
(person who qualifies for something) One who qualifies for something, especially a contestant who qualifies for a stage in a competition.
(preliminary stage of a competition) A preliminary stage of a competition.
(grammar) (grammar) A word or phrase, such as an adjective or adverb, that describes or characterizes another word or phrase, such as a noun or verb; one that adds or subtracts attributes to another.
(marker that qualifies another code element, in computing) (programming) A marker that qualifies or modifies another code element.