prep. | 1. used to indicate that somebody or something is located on something, or moves toward it so as to be on it 2. making or about to make a discovery, often about something secret or illegal 3. in contact with a person or organization 4. into a position on an object or surface 5. used for saying that something is added to a list, statement, word etc 6. used for saying in which direction a building, room, door, or window faces, or where it leads to 1. used to indicate that somebody or something is located on something, or moves toward it so as to be on it 2. making or about to make a discovery, often about something secret or illegal 3. in contact with a person or organization 4. into a position on an object or surface 5. used for saying that something is added to a list, statement, word etc 6. used for saying in which direction a building, room, door, or window faces, or where it leads to |