Definitions
1.noun(grammar) A word or phrase that designates an unspecified or unidentified person or thing or group of persons or things.
2.adjectiveWithout limit; forever, or until further notice; not definite.
3.adjectiveVague or unclear.
4.adjectiveUndecided or uncertain.
5.adjectiveBeing an integral without specified limits.
6.adjectiveDesignating an unspecified or unidentified person or thing or group of persons or things"the indefinite article"