Found 6 Strong's definitions.

1. 1

   G3789: ὄφις (óphis)

   probably from ὀπτάνομαι (through the idea of sharpness of vision); a snake, figuratively, (as a type of sly cunning) an artful malicious person, especially Satan:--serpent.

   100%
2. 2

   G1404: δράκων (drákōn)

   probably from an alternate form of (to look); a fabulous kind of serpent (perhaps as supposed to fascinate):--dragon.

   2%
3. 3

   G1228: διάβολος (diábolos)

   from διαβάλλω; a traducer; specially, Satan (compare שָׂטָן):--false accuser, devil, slanderer.

   2%
4. 4

   G4567: Σατανᾶς (Satanâs)

   of Chaldee origin corresponding to מַעְבָּד (with the definite affix); the accuser, i.e. the devil:--Satan.

   2%
5. 5

   G2191: ἔχιδνα (échidna)

   of uncertain origin; an adder or other poisonous snake (literally or figuratively):--viper.

   2%
6. 6

   G4651: σκορπίος (skorpíos)

   probably from an obsolete (perhaps strengthened from the base of σκοπός and meaning to pierce); a "scorpion" (from its sting):--scorpion.

   2%