Related Clues:

• Cool, in the '50s
• Like an owl
• Quite familiar
• Hardly old-fashioned, in an old-fashioned way
• Not at all nerdy
• Cadence shout
• Not at all square
• Recommended
• Fanny pack spot
• ___ as an owl
• Far from foolish
• Place for a holster
• "In the old grooveroo"
• Holster location
• Like many a 21-Down