(intransitive) (of a fore-and-aft sail) to shift suddenly from one side of the vessel to the other when running before the wind, as the result of allowing the wind to catch the leech
2.
to cause (a sailing vessel) to gybe or (of a sailing vessel) to undergo gybing
noun
3.
an instance of gybing
Word Origin
C17: from obsolete Dutch gijben (now gijpen), of obscure origin