sickness (sicknesses plural )
1 n-uncount Sickness is the state of being ill or unhealthy.
In fifty-two years of working he had one week of sickness...
2 n-uncount Sickness is the uncomfortable feeling that you are going to vomit.
(=nausea)
After a while, the sickness gradually passed and she struggled to the mirror.
→
morning sickness
→
travel sickness
3 n-var A sickness is a particular illness. ...radiation sickness.
morning sickness
Morning sickness is a feeling of sickness that some women have, often in the morning, when they are pregnant. n-uncount
radiation sickness
Radiation sickness is an illness that people get when they are exposed to too much radiation. n-uncount
sickness benefit
Sickness benefit is money that you receive regularly from the government when you are unable to work because of illness.
(BRIT) n-uncount
sleeping sickness
Sleeping sickness is a serious tropical disease which causes great tiredness and often leads to death. n-uncount
travel sickness
If someone has travel sickness, they feel sick as a result of travelling in a vehicle. n-uncount