verb (used with object), back·wind·ed, back·wind·ing. Nautical.
- to divert wind against the lee side of (a sail) from another sail.
- to set (a sail) so that the wind is on what would ordinarily be the lee side, as for turning the bow of a boat away from the wind.
- to blanket (another sailing vessel) by spilling wind from the sails of one vessel onto the lee side of the sails of the other.