Something (pronoun)

1. An undetermined or unspecified thing; an object, item, or matter that is not precisely identified or described.
2. An undetermined or unspecified amount or quantity; an unspecified thing or number.
3. An undetermined or unspecified person or thing; a particular person or thing that is not identified or described.

Origin:

Middle english, from old english sumthing, from sum "some" + -thing.

Examples:

1. I need something to eat.
2. I have something to tell you.
3. I have something for you.
4. I want something to drink.
5. I have something to show you.