tab
1. a small flap, strap, loop, or similar appendage, as on a garment, used for pulling, hanging, or decoration.
2. a tag or label.
3. a small projection from a card, paper, or folder, used as an aid in filing.
4. Informal. a bill, as for a meal in a restaurant; check.
5. a small piece attached or intended to be attached, as to an automobile license plate.
6. a small flap or tongue of material used to seal or close the opening of a container.
7. Also called tabulator. a stop on a typewriter, actuated by a key, that moves the carriage, typing element, etc., a predetermined number of spaces, used for typing material in columns, for fixed indentations, etc.
8. a programmed command on a computer, actuated by a key, that moves the cursor or printhead a predetermined number of spaces, used for keying material in columns, for fixed indentations, etc.