thumbwheel

noun

thumb·wheel | \ ˈthəm-ˌhwēl

, -ˌwēl\

Definition of thumbwheel

: a control for various devices consisting of a partially exposed wheel that can be turned by moving the exposed edge with a finger

Recent Examples on the Web

The head-wrapping ring adjusts easily using a thumbwheel that expands and contracts the sides, similar to adjusting the length of a pair of over-ear headphones. — Valentina Palladino, Ars Technica, "Now Dell has a mixed reality headset, and the XPS 13 has 8th-gen Intel CPUs," 28 Aug. 2017

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