This word occurs only in Prov. 30:15. It is the generic name for any blood-sucking annelid.
There are various species in the marshes and pools of Israel. That here referred to, the Hoemopis, is remarkable for the coarseness of its bite, and is therefore not used for medical purposes. They are spoken of in the East with feelings of aversion and horror, because of their propensity to fasten on the tongue and nostrils of horses when they come to drink out of the pools.