Sick people in general as a group.
We have to cure the sick.
Vomit.
He lay there in a pool of his own sick.
To vomit.
I woke up at 4 am and sicked on the floor.
To fall sick; to sicken.
Having an urge to vomit.
In poor health.
She was sick all day with the flu.
Mentally unstable, disturbed.
In bad taste.
That's a sick joke.
Tired of or annoyed by something.
I've heard that song on the radio so many times that I'm starting to get sick of it.
Very good, excellent, awesome, badass.
Dude, this car's got a sick subwoofer!
In poor condition.
sick building syndrome; my car is looking pretty sick; my job prospects are pretty sick
Failing to sustain adequate harvests of crop, usually specified.
To incite an attack by, especially a dog or dogs.
He sicced his dog on me!
To set upon; to chase; to attack.