Vine's Expository Dictionary: View Entry
TDNT Reference: 2:281,186
δράκων drákōn, drak'-own; probably from an alternate form of δέρκομαι dérkomai (to look); a fabulous kind of serpent (perhaps as supposed to fascinate):—dragon.
The KJV translates Strong's G1404 in the following manner: dragon (13x).
a dragon, a great serpent, a name for Satan
Strong's Number G1404 matches the Greek δράκων (drakōn),
which occurs 13 times in 12 verses
in the TR Greek.