Related Clues:

• Make a tunnel
• One who talks only about himself, say
• Make a hole
• Tiresome person
• Gun barrel measurement
• Leave yawning
• Snoozefest
• Produced, as fruit
• Gun measurement
• Wearisome speaker
• Uninteresting one
• He's ennui-inducing
• Weary with tediousness
• Pierce or tire with tedium
• Person who talks tediously