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tailfin

tailfin

1 5.4
A vertical fin at the back of an airplane that keeps it flying straight
  • noun
  • /ˈteɪlˌfɪn/
  • Specialized
translation icon : aleta de cola
  • When inspecting the aircraft, she noticed that the tailfin was perfectly aligned with the fuselage.

Examples

  • And my one tailfin...

  • The tailfin of the aircraft was damaged during the storm, causing it to require extensive repairs.

  • Robotic arms place the tailfin and the wings on the plane and then add the engines.

    Academic text (2007)
  • A great black hole gaped open, a perfect oval sliced cleanly across the curve of a tailfin.

    Fiction book (1999)
  • The easiest way to distinguish early P-51s from P-40s (for me) is to look at the tailfin.

    Blog text (34)
  • He traveled American-flag carriers mainly for that reason, certainly not because he liked the sight of the Stars and Stripes on the tailfins of the aircraft.

    Fiction book (1991)
  • Engineers carefully designed the tailfin to enhance the plane's stability in flight.

Synonyms

tail fin
vstailfin
  • Specialized
1 4.2

A vertical surface at the plane's tail that helps keep it steady in flight

is the single word modern form rather than the spaced variant
vertical fin
vstailfin
  • Specialized
1 4.3

A flat upright part on an airplane tail that keeps the plane pointing straight

is specifically the rear stabilizing fin forming part of the tail structure
vertical tail
vstailfin
  • Specialized
1 6.0

The upright fin on a plane's tail that keeps it pointed straight

is focused on the fin as a rear stabilizer rather than the aerodynamic term
vertical stabilizer
vstailfin
  • Specialized
1 5.9

Upright part of an airplane tail that helps keep the plane pointing straight during flight

is a fin at the tail rear stressing stabilizing function rather than general part

Surface Forms

tailfin singular
tailfins plural

Morphology

tailfin = tail + fin (transparent) = tail + fin

A direct compound of 'tail' (rear) + 'fin' (projecting stabilizing surface); the meaning is literal and easily inferable.

Etymology

Tailfin comes from the simple parts tail and fin, where tail means 'the back part' and fin means 'a flat part like a fish fin'. So an airplane tailfin is a fin at the rear that helps keep the plane steady and pointing straight.