1.NounHygrocybe conica, a small mushroom of the waxcap genus found in North America and Northern Europe.
2.NounA traffic cone.
3.NounAlternative form of witch hat.
4.NounUsed other than figuratively or idiomatically: see witch, hat.
"We had finally found the witch, who was wearing a green top hat that seemed a bit out of place. As she looked up towards us, the wind blew the witch's hat off of the witch's head."