Keyword definition, a word that serves as a key, as to the meaning of another word, a sentence, passage, or the like. See more..Keywords definition, a word that serves as a key, as to the meaning of another word, a sentence, passage, or the like. See more..Key word definition, a word that serves as a key, as to the meaning of another an online search for information Search the database for the keyword “Ireland.” .Keyword definition a word used as a key to a code | Meaning, pronunciation, translations and examples..Keyword definition The definition of a keyword is a significant word, or a word used to find information when researching. noun When you are looking for .Keyword definition . a word that you type into a computer so that the computer will find information that contains that word . a word that you type into a .Define keyword. keyword synonyms, keyword pronunciation, keyword translation, English dictionary definition of keyword. also key word n. . A word that serves .A usually keyword \ k wrd \ a significant word from a title or document used b a word exemplifying the meaning or value of a letter or symbol .A phrase used for pointing out a word that has a lot of meaning to a sentence, but is easily missed or not taken KEYWORD COPYRIGHTED BY J. APPLEGATE. The definition of Keywords defined and explained in simple language..