tab

A small flap or strip of material attached to something, for holding, manipulation, identification, opening etc.

slangAn ear.

graphical user interfaceA navigational widget, resembling a physical tab, for switching between documents or sets of controls.

guiThe page or form associated with such a navigational widget.

“How many tabs are open in your Web browser?”

british armymilitary slangA fast march or run with full kit.

informalchiefly north americanA restaurant bill.

informalchiefly north americanCredit account, e.g., in a shop or bar; slate

“Put this round on my tab, please, barman.”

The cost or bill for anything.

computingA space character that extends to the next aligned column, traditionally used for tabulation.

GeordiemackemA cigarette.

“Lend us a tab!”

A form of musical notation indicating fingering rather than the pitch of notes, commonly used for stringed instruments.

oxbridge slangA student of Cambridge University.

colloquialA tabloid newspaper.

informalA tablet, especially one containing illicit drugs.

To affix with tabs; to label.

computingTo use the Tab key on a computer to advance the cursor or move the input focus, or on a typewriter to advance the carriage.