From Longman Dictionary of Contemporary Englishtaskbartask‧bar /ˈtɑːskbɑː $ ˈtæskbɑːr/ noun [countable] a narrow area across the bottom of a computer screen, that shows which documents or programs are open
Examples from the Corpus
taskbar• And the taskbar is a reasonably good way of implementing the underlying structure.• Simultaneously, it shows up on the taskbar.• Start more programs, and more stuff shows up on the taskbar.• You can play with the taskbar itself in ways that make little sense but may provide some amusement to bored teen-agers.• The taskbar also has some important controls that are, alas, annoyingly invisible. 