Source : WordNet®

tab
     n 1: the bill in a restaurant; "he asked the waiter for the
          check" [syn: {check}, {chit}]
     2: sensationalist journalism [syn: {yellow journalism}, {tabloid}]
     3: the key on an electric typewriter that causes a tabulation
        [syn: {tab key}]
     4: a short strip of material attached to or projecting from
        something in order to facilitate opening or identifying or
        handling it; "pull the tab to open the can"; "files with a
        red tab will be stored separately"; "the collar has a tab
        with a button hole"
     5: a dose of medicine in the form of a small pellet [syn: {pill},
         {lozenge}, {tablet}]
     [also: {tabbing}, {tabbed}]

tabbing
     See {tab}