1. A feeling of sickness and queasiness experienced by a person traveling on water, caused by the motion of waves and the ship
Many passengers suffered from nausea at sea during the rough voyage.
Muitos passageiros sofreram de enjôo do mar durante a viagem agitada.
2. Seasickness; the uncomfortable sensation of dizziness and nausea induced by continuous motion of a vessel
She took medication to prevent nausea at sea before boarding the cruise.
Ela tomou medicamento para prevenir o enjôo do mar antes de embarcar no cruzeiro.