tab

Tab \Tab\, n. [Etymol. uncertain.] 1. The flap or latchet of a shoe fastened with a string or a buckle. [1913 Webster] 2. A tag. See {Tag}, 2. [1913 Webster] 3. A loop for pulling or lifting something. [1913 Webster] 4. A border of lace or other material, worn on the inner front edge of ladies' bonnets. [1913 Webster] 5. A loose pendent part of a lady's garment; esp., one of a series of pendent squares forming an edge or border. [1913 Webster] 6. a small projecting piece of a file folder, file card, or similar sheet used in a filing system, on which a notation is written to permit convenient search for the folder, card, etc. [PJC] 7. a bill or check for some purchase, as in a restaurant; as, the salesman will pick up the tab. [PJC] 8. a key on a typewriter or computer keyboard which advances the carriage or curser to the next (preset) tab position; -- used especially to type or print text or numbers in columns. [PJC]