English

Definition of mainsail noun from the Oxford Advanced Learner's Dictionary

 

mainsail

 noun
noun
BrE BrE//ˈmeɪnseɪl//
 
; NAmE NAmE//ˈmeɪnseɪl//
 
; BrE BrE//ˈmeɪnsl//
 
; NAmE NAmE//ˈmeɪnsl//
 
Parts of boats and ships
 
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the largest and most important sail on a boat or ship See related entries: Parts of boats and ships
See the Oxford Advanced American Dictionary entry: mainsail