Boyd’s Bible Dictionary:
(destroyers). Constituted the third Egyptian plague (Ex. 8:16-18; Psa. 105:31).
Concise Bible Dictionary:
See PLAGUES OF EGYPT.
Strong’s Dictionary of Hebrew Words:
Meaning:
from 3661 in the sense of fastening; a gnat (from infixing its sting; used only in plural (and irreg. in Exod. 8:17,18; Heb. 13:14))
KJV Usage:
lice, X manner