そうだ、辞書をひこう。

昨日来展開されている吐き気論争？。
本日用例が紹介されました。なるほど。こういうときは辞書をひいてみればよかった。
Oxford Advanced Learner's Dictionaryより抜萃。勉強になります。

SICK

adj. WANTING TO VOMIT
[not usually before noun] (especially BrE) feeling that you want to vomit:
　If you eat any more cake you'll make yourself sick./a sick feeling in your stomach
IDM be sick (BrE) to bring food from your stomach back out through your mouth
　SYN vomit: I was sick three times in the night./She had been violently sick.

noun VOMIT
[U] (BrE, informal) food that you bring back up from your stomach through your mouth
　SYN vomit: There was a pool of sick on the carpet.

verb
sick sth up (BrE, informal) to bring sth up from the stomach back out through your mouth
　SYN vomit: She'd sicked up her milk.