Related Clues:

• See 1-Across
• Clock sound
• It's heard around the clock
• Watch word?
• Every other second?
• Half time?
• Metronome sound
• Tick-___
• Tick-__
• Pendulum sound
• Grandfather clock sound
• Tick follower
• Half-a-second sound
• Part of a second sound?
• Apt rhyme for “clock”