Accompaniers of canes

• They go with tails
• Props for Mr. Monopoly and Mr. Peanut
• They got tipped at old-fashioned gentlemen's clubs
• Astaire props
• They're worn on heads with tails
• They're often seen with tails
• Formal wear
• They're often worn with tails
• Formalwear of old

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