Meaning of spinnaker

spin•na•ker

Pronunciation: (spin'u-kur), [key]
— n. Naut.
  1. a large, usually triangular sail carried by a yacht as a headsail when running before the wind or when the wind is abaft the beam.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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