Variant spelling of accost (“sail along the coast of”) influenced by coast.
accoast (third-person singular simple present accoasts, present participle accoasting, simple past and past participle accoasted)
- (obsolete, transitive, intransitive) To lie or sail along the coast or side (of); to accost.
1596, Edmund Spenser, The Faerie Queene:
[…] whether high towering or accoasting low […]