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Sidley

American  
[sid-lee] / ˈsɪd li /

noun

  1. Mount, a mountain in Antarctica, in Marie Byrd Land. 13,717 feet (4,181 meters).

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.