|Easton's Bible Dictionary|
The mediaeval name (a corruption of "crocodile") of a fabulous serpent supposed to be produced from a cock's egg. It is generally supposed to denote the cerastes, or "horned viper," a very poisonous serpent about a foot long. Others think it to be the yellow viper (Daboia xanthina), one of the most dangerous vipers, from its size and its nocturnal habits (Isaiah 11:8; 14:29; 59:5; Jeremiah 8:17; in all which the Revised Version renders the Hebrew tziph'oni by "basilisk"). In Proverbs 23:32 the Hebrew tzeph'a is rendered both in the Authorized Version and the Revised Version by "adder;" margin of Revised Version "basilisk," and of Authorized Version "cockatrice."
Noah Webster's Dictionary
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.
Int. Standard Bible Encyclopedia
Pliny (see Oxford Dictionary, under the word "Cockatrice") relates that the ichneumon darts down the open mouth of the crocodile, and destroys it by gnawing through its belly. In the course of time, as the story underwent changes, the animal was metamorphosed into a water snake, and was confused with the crocodile itself, and also with the basilisk. According to the Encyclopedia Britannica, 11th edition, the cockatrice was believed as late as the 17th century to be produced from a cock's egg and hatched by a serpent, and "to possess the most deadly powers, plants withering at its touch, and men and animals being poisoned by its look. It stood in awe however of the cock, the sound of whose crowing killed it.. The weasel alone among animals was unaffected by the glance of its evil eye, and attacked it at all times successfully; for when wounded by the monster's teeth it found a ready remedy in rue, the only plant which the cockatrice could not wither." The real ichneumon does kill the most deadly snakes, and has been supposed to resort to a vegetable antidote when bitten. It actually dies however when bitten by a deadly snake, and does not possess a knowledge of herbs, but its extraordinary agility enables it ordinarily to escape injury. It is interesting to see how the changing tale of this creature with its marvelous powers has made a hodge-podge of ichneumon, weasel, crocodile, and serpent.
The Biblical references (the King James Version Isaiah 11:8; Isaiah 59:5 Jeremiah 8:17) are doubtless to a serpent, the word "cockatrice," with its medieval implications, having been introduced by the translators of the King James Version.
Alfred Ely Day
Cockatrice (3 Occurrences)
Isaiah 11:8 And the sucking child shall play on the hole of the asp, and the weaned child shall put his hand on the cockatrice' den. (KJV YLT)
Isaiah 14:29 Rejoice not thou, whole Palestina, because the rod of him that smote thee is broken: for out of the serpent's root shall come forth a cockatrice, and his fruit shall be a fiery flying serpent. (KJV)
Isaiah 59:5 They hatch cockatrice' eggs, and weave the spider's web: he that eateth of their eggs dieth, and that which is crushed breaketh out into a viper. (KJV WBS)