forestaysail
fore.stay.sail \-.sa-l, -s*l\ n : the triangular aftermost headsail of a schooner, ketch, or yawl set on h anks on the forestay
Webster's English Dictionaryfore.stay.sail \-.sa-l, -s*l\ n : the triangular aftermost headsail of a schooner, ketch, or yawl set on h anks on the forestay