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



BrE BrE//ˈspɪnəkə(r)//
; NAmE NAmE//ˈspɪnəkər//
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a large extra sail on a racing yacht that you use when the wind is coming from behind Word Originmid 19th cent.: apparently a fanciful formation from Sphinx, the name of the yacht first using it.
See the Oxford Advanced American Dictionary entry: spinnaker