HEI definition

Interjection

hi
bye (often repeated twice for goodbye: "hei hei")
hey

Pinyin syllable

hei

A transliteration of any of a number of Chinese characters properly represented as having the tone, hēi.

Usage notes

English transcriptions of Chinese speech often fail to distinguish between the critical tonal differences employed in the Chinese language, using words such as this one without the appropriate indication of tone.