What does tab mean?
“Tab” is a flexible English word for several small, identifiable features. In computing, its best-known sense is a separate page or section in a browser or application, opened when a user selects a link or chooses “new.” In offices and homes, a tab may be a small paper or plastic label attached to a folder, file, box, or page. Less commonly, it means a projecting flap or a marked position on a measuring or typing device. The noun can also denote a bill, particularly in a bar or restaurant, though “bill” is more usual in British English. As a verb, “tab” can mean to attach a label or identify something with a tab, and informal uses include tabbing someone’s charges. Across these senses, the word suggests something small that marks, separates, identifies, or records part of a larger whole.
A small label, flap, or projecting piece used to identify, separate, or operate something; also a separate page or section in a software interface, or a bill for charges.
"She clicked the tab marked “Settings.”"
The computing sense is now particularly familiar. In British English, “bill” is often preferred for a restaurant or bar statement.
To label something with a tab, or to record or assign charges to someone.
"The clerk tabbed the file with a red marker."
The charge-related sense is informal; “charged the items to” or “added the items to the bill” is more formal.
Use “tabs” for multiple labels, interface sections, or related bills.
"The document has tabs marking each section."
Before browser tabs became everyday, “tab” was already the small label that helped people find one folder or document among many.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does tab come from?
The word “tab” is English and its precise origin is uncertain. Its older senses include a small flap, label, or projecting piece, with later developments in office work, typing, and computing. The computing sense followed the development of tabbed interfaces, while the informal sense for an itemized bill became established in business and social contexts.
Related word forms
How tab is actually used
The word is neutral in general use. “Tab” is especially common in computing and office contexts; “tab” for a bill may sound informal or transactional compared with “bill” or “invoice.”
Easily confused with tab
A tab is usually a small flap, strip, or interface element attached to or associated with something, whereas a tag is commonly a label tied or fastened to an object.
“Tab” refers to a label, flap, or computer control; “tale” means a story.