1. A feeling of nausea and discomfort caused by the motion of a ship or boat on water; seasickness
The passenger suffered from sea weakness during the rough voyage.
O passageiro sofreu com enjoo do mar durante a viagem turbulenta.
2. Colloquially, a state of physical weakness or vulnerability experienced at sea
After days at sea, the sailors complained of sea weakness.
Após dias no mar, os marinheiros reclamaram de fraqueza do mar.