verb (used with object), backwinded, backwinding. Nautical.
to divert wind
against the lee side of (a sail) from another sail.
(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.