noun Vomit. (she was busy wiping sick from the carpet)
verb Bring something up by vomiting. (he was passing blood and sicking it up)
adjective Affected by physical or mental illness. (nursing very sick children) Feeling nauseous and wanting to vomit. (he was starting to feel sick) Intensely annoyed with or bored by (someone or something) as a result of having had too much of them. (I'm absolutely sick of your moods) (especially of humour) having something unpleasant such as death or misfortune as its subject and dealing with it in an offensive way. (this was someone's idea of a sick joke) Excellent.
verb Set a dog on. (the plan was to surprise the heck out of the grizzly by sicking the dog on him)