Thumb

From JargonWiki

The Jargon File

Parts of this article are based on the Jargon File, v. 4.4.7,
a public domain document of hacker jargon.

thumb

Usage: n.

thumb: n.

The slider on a window-system scrollbar. So called because moving it allows you to browse through the contents of a text window in a way analogous to thumbing through a book.

[edit]

Sources

Source: thumb, in The Jargon File, version 4.4.7.

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