blech

Short definition from Wiktionary

Interjection

1. 1
   An imitation of the sound of gagging, used to express disgust or disdain.

Verb

1. 1
   To have the vomiting reflex triggered.

Noun

1. 1
   A metal sheet used to cover stovetop burners on Shabbat to allow food to be kept warm without violating the prohibition against cooking.