黑函

Traditional form:

黑函

Pinyin (reading):

hēihán

Definitions:

• poison pen letter (Tw)

Characters:

• 黑 - black; dark; evil, sinister
• 函 - correspondence; a case, a box

Traditional characters:

• 黑 - black; dark; evil, sinister
• 函 - correspondence; a case, a box