Bible Dictionaries
Mainsail

Holman Bible Dictionary

The principal sail of a vessel (Acts 27:40 ). Modern translations render the Greek term “foresail,” understanding the sail to be a smaller, auxiliary sail used in strong winds when the full force provided by the mainsail would be unnecessary or dangerous.

Bibliography Information
Butler, Trent C. Editor. Entry for 'Mainsail'. Holman Bible Dictionary. https://www.studylight.org/​dictionaries/​eng/​hbd/​m/mainsail.html. 1991.