Related Clues:

• Pain at a party
• Ho-hum character
• Crashing sort
• Use a drill
• Gave birth to
• Depressant
• Occurrence at many a lecture
• Make yawn
• Show ennui
• Cylinder diameter
• Tedious type
• Long-winded fellow
• Yawn producer
• Bedtime indicator
• Reduce to tears, in a way