Definition from Wiktionary, the free dictionary
From the Old English seocness.
Audio (US) (file)
- The quality or state of being sick or diseased; illness; disease or malady.
- Nausea; qualmishness; as, sickness of stomach.
Derived terms 
the quality or state of being sick or diseased; illness; disease or malady
nausea; qualmishness; as, sickness of stomach
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