From Longman Dictionary of Contemporary Englishmorning sicknessˈmorning ˌsickness noun [uncountable] MIMBa feeling of sickness that some women have during the morning when they are pregnant, usually in the early months
Examples from the Corpus
morning sickness• Thalidomide, the drug prescribed in the Fifties for morning sickness, is the most infamous example.• Well, as Faye told you over lunch, she feels that her morning sickness is beginning to taper off.• No mere morning sickness this, but gripping, round-the-clock, horrible nausea.• No morning sickness, no backache, no obscure cravings.• The bulimia, the morning sickness, her collapsing marriage and her jealousy of Camilla conspired to make her life intolerable. 