1. The person, thing, or idea indicated, mentioned, or understood from the situation; the time, action, or event specified; the kind or thing specified as follows; one or a group of the indicated kind
2. The one farther away or less immediately under observation or discussion; the former one
3. The one; the thing; the kind; something, anything plural; some persons
1. An interrogative pronoun and a relative pronoun; can be either singular or plural.
2. One; anyone.
(Homonym: witch).
An interrogative adjective asking for a selection of one thing among many.