retch

名词 retch:

1. an involuntary spasm of ineffectual vomiting
   同义词：heave

动词 retch:

1. eject the contents of the stomach through the mouth
   同义词：vomit, vomit up, purge, cast, sick, cat, be sick, disgorge, regorge, puke, barf, spew, spue, chuck, upchuck, honk, regurgitate, throw up
2. make an unsuccessful effort to vomit; strain to vomit
   同义词：gag, heave

retch

v.（动词）
retched,retch.ing,retch.es
v.intr.（不及物动词）
To try to vomit.
作呕
v.tr.（及物动词）
To vomit.
呕吐

来源：
Alteration of Middle English rechen
中古英语 rechen的变化
from Old English hrôcan
源自 古英语 hrôcan

【引伸】
retch
n.（名词）