tab

ot noun

1. The page or form associated with such a navigational widget. How many tabs are open in your Web browser?
2. Credit account, e.g., in a shop or bar; slate Put this round on my tab, will you, barman.
3. A cigarette. Giv'is a tab man!
4. A small flap or strip of material attached to something, for holding, manipulation, identification, opening etc.

fe’l verb

1. To affix with tabs; to label.
2. To use the Tab key on a computer to advance the cursor or move the input focus, or on a typewriter to advance the carriage.