CENTERBOARD
Meaning of CENTERBOARD in English
transcription, транскрипция: [ ˈsen-tər-ˌbȯrd, ˈse-nər- ]
noun
Date: 1849
: a retractable keel used especially in sailboats
Merriam-Webster's Collegiate English vocabulary.
Энциклопедический словарь английского языка Merriam Webster.
2003