Possible Clues:

• Timely contraction?
• Time for 27 across, by the sound of it (1'5)
• Time to turn the key after the firm is up there (1'5)
• Does this give one the time to give a firm turn to the key in it at last?
• It is time for a firm turn to the key in it (1'5)
• Referring to the hour hand
• Timely word from officer on security measure
• Round go the hands on it (and round goes the key in it at last) (1'5)
• 'One ___ Jump'
• It's time to give a firm turn to the key in it (1'5)