Definitions
1.nounA situation which allows a mutually exclusive choice between two or more possibilities; a choice between two or more possibilities.
2.nounOne of several mutually exclusive things which can be chosen.
3.nounThe remaining option; something available after other possibilities have been exhausted.
4.nounAlternative rock
5.adjectiveRelating to a choice between two or more possibilities."an alternative proposition"
6.adjectiveOther; different from something else.
7.adjectiveNot traditional, outside the mainstream, underground.
8.adjectiveAlternate, reciprocal.