Possible Clues:

• Watering can parts
• Tea kettle features
• Pontificates — toss-up (anag)
• Declaims; jets
• Jets parking in the open aboard ship
• Gargoyle mouths, at times
• Features of teapots
• Rabbits run out of veg
• Openings for passage of liquids
• Grow up! Not right head of state is sounding off ...