sea-wing

plural sea-wings

1. A wing-shell, often of the genus Pinna.
2. poeticThe sail of a vessel.

   His ship left port in its sea wings clad / When the sky was fair and blue.

   1896, The Cornell Era, volume 28, page 73

   1 more example

   It is pretty difficult to perceive in the old, mildewed craft […] any semblance to Gen. Butler's fast sailing schooner yacht America. Yet the old America it is, with its sea wings gone and its racing heels doubled and twisted by years of neglect and inactivity.

   quoted in 2024, David Gendell, The Last Days of the Schooner America (page 76)