Related Clues:

• Tree covering
• Trunk cover
• Tree hugger?
• Dogwood covering, appropriately
• Cinnamon source
• Lab alert
• Lab warning
• Warning from a doghouse
• Small sailing ship
• Cork, actually
• Lab output?
• Say ''Arf!''
• It may act as an intruder alert
• Initials may be carved into it
• Spaniel sound