1. (n.) A fabulous serpent whose breath and look were said to be fatal. See Basilisk.

2. (n.) A representation of this serpent. It has the head, wings, and legs of a bird, and tail of a serpent.

3. (n.) A venomous serpent which cannot now be identified.

4. (n.) Any venomous or deadly thing.

Benedict Arnold Brutus Judas Judas Iscariot Quisling achievement alerion animal charge annulet archtraitor argent armorial bearings armory arms azure bandeau bar bar sinister baton bearings bend bend sinister betrayer billet blazon blazonry bordure broad arrow cadency mark canton chaplet charge chevron chief coat of arms conniver conspirator conspirer coronet crescent crest cross cross moline crown device difference differencing double agent double-crosser double-dealer eagle ermine ermines erminites erminois escutcheon falcon fess fess point field file flanch fleur-de-lis fret fur fusil garland griffin gules gyron hatchment helmet heraldic device honor point impalement impaling inescutcheon informer intrigant intriguer label lion lozenge machinator mantling marshaling martlet mascle metal motto mullet nombril point octofoil or ordinary orle pale paly pean pheon plotter purpure quarter quartering quisling rat rose sable saltire schemer scutcheon serpent shield snake spread eagle subordinary tenne timeserver tincture torse traitor treasonist tressure trimmer turncoat unicorn vair vert wreath yale