Pronunciation: (hed'sāl"; Naut.hed'sul), [key]
1. any of various jibs or staysails set forward of the foremost mast of a vessel.
2. any sail set on a foremast, esp. on a vessel having three or more masts.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.