UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/sɪˈɛərə/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/siˈɛrə/ ,USA pronunciation: respelling(sē erə)

WordReference Random House Learner's Dictionary of American English © 2020
si•er•ra /siˈɛrə/USA pronunciation   n.[countable]pl.  -ras. 
  1. a chain of mountains whose peaks look like the teeth of a saw.

WordReference Random House Unabridged Dictionary of American English © 2020
si•er•ra  (sē erə),USA pronunciation n. 
  1. a chain of hills or mountains, the peaks of which suggest the teeth of a saw.
  2. any of several Spanish mackerels of the genus Scomberomorus, esp. S. sierra, found in western North America.
  3. Telecommunicationsa word used in communications to represent the letter S.
  • Latin serra
  • Spanish: literally, saw
  • 1590–1600

Collins Concise English Dictionary © HarperCollins Publishers::
sierra /sɪˈɛərə/ n
  1. a range of mountains with jagged peaks, esp in Spain or America
Etymology: 17th Century: from Spanish, literally: saw, from Latin serra; see serrate

siˈerran adj
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