noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An aerodynamic control surface device, used to control against unwanted rolling (rotation) about the axis of movement. The moving wingtip is self-gyro-stabilized with a rolling bladed wheel catching the airstream, providing the gyroscopic moment.

Etymology

Blend of roll + aileron.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.