Strong's #660: 'eph`eh (pronounced ef-eh')

from 659 (in the sense of hissing); an asp or other venomous serpent:--viper.

Brown-Driver-Briggs Hebrew Lexicon:

'eph‛eh

1) a viper, snake

Part of Speech: noun masculine

Relation: from H659 (in the sense of hissing)

Usage:

This word is used 3 times:

 

Job 20:16: "He shall suck the poison of asps: the viper's tongue shall slay"
Isaiah 30:6: "from whence come the young and old lion, the viper and fiery flying serpent, they will carry their riches"
Isaiah 59:5: "of their eggs dieth, and that which is crushed breaketh out into a viper."