Dictionary.com
Thesaurus.com

clarabella

British  
/ ˌklærəˈbɛlə /

noun

  1. an eight-foot flute stop on an organ

"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

Etymology

Origin of clarabella

C19: from Latin clāra, feminine of clārus clear + bella, feminine of bellus beautiful