MAIN-TOPMAST
Meaning of MAIN-TOPMAST in English
/mayn'top"mast', -mahst'/ ; Naut. /mayn'top"meuhst/ , n. Naut.
the mast next above the main lower mast.
[ 1485-95 ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012