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definitions

vertical stabilizer

noun Aeronautics.

the fixed vertical surface of an aircraft empennage, to which the rudder is hinged.
Also called fin, vertical fin.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for vertical stabilizer

vertical stabilizer

noun

the US name for fin 1 (def. 3a)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012