Related Clues:

• Open wide?
• Factor in determining terminal velocity
• Buzzkill
• Camp clothing?
• __ race
• Tidal wave
• Impatient gesture
• Sleepiness sign
• Put to sleep, so to speak
• Tedious fellow
• One causing ennui
• Drill holes
• Make weary by being dull
• Yawn producer, perhaps
• Pull, caveman style