'Serpent's' in the Bible

I went out at night through the Valley Gate toward the Serpent’s Well and the Dung Gate, and I inspected the walls of Jerusalem that had been broken down and its gates that had been destroyed by fire.

They sharpen their tongues like a serpent’s;Poison of a viper is under their lips. Selah.

And {an infant} shall play over a serpent's hole, and {a toddler} shall put his hand on a viper's hole.

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.

The wolf and the lamb shall feed together, and the lion shall eat straw like the bullock: and dust shall be the serpent's meat. They shall not hurt nor destroy in all my holy mountain, saith the LORD.

Her voice shall go like a serpent's; for they shall march with an army, and come against her with axes, as hewers of wood.

The woman was given two wings of a great eagle, so that she could fly from the serpent’s presence to her place in the wilderness, where she was fed for a time, times, and half a time.