We run into a cross-sea or a swell, or something, and they disappear again, and their places at the table remain vacant.
A cross-sea was running and I could not feel sure that all was well with the missing boat.
We are deathly sick, because there is a cross-sea beneath us and a wet sail above.
This is similar to a cross-sea, except that it undulates without breaking violently.
It is all heaped and tossed and tumbled as though the earth there had been a cross-sea.