What magicians sometimes wear on their heads: 2 wds

• Wardrobe items in "A Chorus Line"
• They're often seen with tails
• They have high crowns
• Formalwear of old
• Formal headwear
• Formal wear
• Headwear with tails
• Tall head coverings
• They may be seen with tails

Wiktionary Word definitions in Wiktionary
n. (plural of tophat nodot=1 English), (alternative spelling of top hats nocap=1 English)