Definition of "seasickness" [sea•sick•ness]

• Motion sickness resulting from the pitching and rolling of a ship or boat in water, especially at sea. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• ""Maybe there is a head or two broken; 'tis mostly what we call seasickness, however.""
• "Its called seasickness, duck, and it turns you green."
• "Luckily seasickness is never fatal and next day we were all ready for an excursion to Norham Castle, a very ruinous ruin."