Related Clues:

• Like some keys: Abbr
• Sixty secs
• Part of r.p.m.: Abbr
• One sweep of a hand: Abbr
• 60 secs
• Fraction of an hr
• 60-sec. span
• Cell unit: Abbr
• Hr. portion
• Calculus calculation: Abbr
• Part of an hr
• Lots of secs.?
• TV ad unit: Abbr
• It has a lot of secs
• Musical key abbr